Slug vs. Bleed — What's the Difference?
By Tayyaba Rehman — Updated on October 30, 2023
Slug refers to a gastropod or a portion of space in printing, while Bleed denotes liquid escape or the extension of a print image beyond its intended border.
Difference Between Slug and Bleed
Table of Contents
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Key Differences
Slug and Bleed have distinct meanings, especially in different contexts. In nature, a Slug is a common name for a gastropod without a shell or with a very small, internal shell. On the other hand, Bleed refers to the process of a liquid, often blood, escaping from where it should be contained.
In the printing industry, Slug refers to the non-printing area outside the bleed which contains printing instructions or job information. Bleed, in the same industry, means extending the printed image beyond the intended border, ensuring that no unprinted edges occur in the final trimmed document.
A Slug can also imply a single, usually heavy, blow or sudden effort, contrasting Bleed, which is more about a gradual release or flow.
Metaphorically, to Slug someone is to hit them, and to Bleed can mean to drain someone of their resources or emotions.
While Slug suggests solidity, heaviness, or steadiness, Bleed evokes imagery of fluidity, loss, or extension.
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Comparison Chart
Basic Meaning
A gastropod or space in printing
Liquid escape or print image extension
Contextual Usage
Nature, printing, a blow
Bodily function, emotion, printing
Physical Form
Solid (in terms of an animal) or space (in printing)
Liquid (in general use) or extended imagery (in printing)
Metaphorical Meaning
To hit or make a sudden effort
To drain resources or emotions
Connotations
Steadiness, heaviness
Fluidity, loss, extension
Compare with Definitions
Slug
A gastropod mollusk without a shell or with a very small one.
The garden is infested with slugs that eat the lettuce.
Bleed
To draw resources from something.
The war continued to bleed the country's resources.
Slug
A piece of metal shaped like a coin, used fraudulently.
Someone tried to use a slug in the vending machine.
Bleed
In printing, to extend beyond the intended border.
Make sure the images bleed for a cleaner trim.
Slug
A portion of space in printing containing job details.
The slug area will be cut off after printing.
Bleed
To ooze or merge colors into each other.
The blue and yellow began to bleed, creating a greenish tint.
Slug
Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc. The word slug is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semislugs (this is in contrast to the common name snail, which applies to gastropods that have a coiled shell large enough that they can fully retract its soft parts into the shell).
Bleed
To feel strong emotion, sympathy, or sorrow.
His heart bleeds for the less fortunate.
Slug
A round bullet larger than buckshot.
Bleed
To emit or lose blood.
Slug
A shot of liquor.
Bleed
To be wounded, especially in battle.
Slug
An amount of liquid, especially liquor, that is swallowed in one gulp; a swig.
Bleed
To feel sympathetic grief or anguish
My heart bleeds for the victims of the air crash.
Slug
A small metal disk for use in a vending or gambling machine, especially one used illegally.
Bleed
To exude a fluid such as sap.
Slug
A lump of metal or glass prepared for further processing.
Bleed
To pay out money, especially an exorbitant amount.
Slug
A strip of type metal, less than type-high and thicker than a lead, used for spacing.
Bleed
To run together or be diffused, as dyes in wet cloth.
Slug
A line of cast type in a single strip of metal.
Bleed
To undergo or be subject to such a diffusion of color
The madras skirt bled when it was first washed.
Slug
A compositor's type line of identifying marks or instructions, inserted temporarily in copy.
Bleed
To show through a layer of paint, as a stain or resin in wood.
Slug
(Physics) The British unit of mass that accelerates at the rate of one foot per second per second when acted on by a force of one pound on the surface of the Earth.
Bleed
To be printed so as to go off the edge or edges of a page after trimming.
Slug
Any of various terrestrial gastropod mollusks having a slow-moving slimy elongated body with no shell or with a flat rudimentary shell on or under the skin, usually found in moist habitats.
Bleed
To take or remove blood from.
Slug
A sea slug.
Bleed
To extract sap or juice from.
Slug
The smooth soft larva of certain insects, such as the sawfly.
Bleed
To draw liquid or gaseous contents from; drain.
Slug
A slimy mass of aggregated amoeboid cells that develops into the spore-bearing fruiting body of a cellular slime mold.
Bleed
To draw off (liquid or gaseous matter) from a container.
Slug
(Informal) A sluggard.
Bleed
To obtain money from, especially by improper means.
Slug
A hard heavy blow, as with the fist or a baseball bat.
Bleed
To drain of all valuable resources
"Politicians ... never stop inventing illicit enterprises of government that bleed the national economy" (David A. Stockman).
Slug
A commuter who slugs.
Bleed
To cause (an illustration, for example) to bleed.
Slug
(Printing) To add slugs to.
Bleed
To trim (a page, for example) so closely as to mutilate the printed or illustrative matter.
Slug
(Informal) To drink rapidly or in large gulps
Slugged down a can of pop.
Bleed
An instance of bleeding.
Slug
To strike heavily, especially with the fist or a bat.
Bleed
Illustrative matter that bleeds.
Slug
To wait for or obtain a ride to work by standing at a roadside hoping to be picked up by a driver who needs another passenger to use the HOV lanes of a highway.
Bleed
A page trimmed so as to bleed.
Slug
Any of many terrestrial pulmonate gastropod mollusks, having no (or only a rudimentary) shell.
Bleed
The part of the page that is trimmed off.
Slug
(obsolete) A slow, lazy person; a sluggard.
Bleed
To lose blood through an injured blood vessel.
If her nose bleeds, try to use ice.
Slug
A bullet or other projectile fired from a firearm; in modern usage, generally refers to a shotgun slug.
Bleed
(transitive) To let or draw blood from.
Slug
A solid block or piece of roughly shaped metal.
Bleed
(transitive) To take large amounts of money from.
Slug
A counterfeit coin, especially one used to steal from vending machines.
Bleed
(transitive) To steadily lose (something vital).
The company was bleeding talent.
Slug
A shot of a drink, usually alcoholic.
Bleed
To spread from the intended location and stain the surrounding cloth or paper.
Ink traps counteract bleeding.
Slug
(journalism) A title, name or header, a catchline, a short phrase or title to indicate the content of a newspaper or magazine story for editing use.
Bleed
(transitive) To remove air bubbles from a pipe containing other fluids.
Slug
The imperial (English) unit of mass that accelerates by 1 foot per second squared (1 ft/s²) when a force of one pound-force (lbf) is exerted on it.
Bleed
(transitive) To tap off high-pressure gas (usually air) from a system that produces high-pressure gas primarily for another purpose.
At low engine speeds, valves open to bleed some of the highly-compressed air from the later compressor stages, helping to prevent engine surging.
High-pressure air bled from the APU is used to spin up the engines and run the APU generator and hydraulic pump, and can also be used to pressurise the cabin if necessary.
Slug
A discrete mass of a material that moves as a unit, usually through another material.
Bleed
To bleed on; to make bloody.
Slug
A motile pseudoplasmodium formed by amoebae working together.
Bleed
To show one's group loyalty by showing (its associated color) in one's blood.
He was a devoted Vikings fan: he bled purple.
Slug
(railroading) An accessory to a diesel-electric locomotive, used to increase adhesive weight and allow full power to be applied at a lower speed. It has trucks with traction motors, but lacks a prime mover, being powered by electricity from the mother locomotive, and may or may not have a control cab.
Bleed
To lose sap, gum, or juice.
A tree or a vine bleeds when tapped or wounded.
Slug
(television editing) A black screen.
Bleed
To issue forth, or drop, like blood from an incision.
Slug
(metal typesetting) A piece of type metal imprinted by a linotype machine; also a black mark placed in the margin to indicate an error; also said in application to typewriters; type slug.
Bleed
To destroy the environment where another phonological rule would have applied.
Labialization bleeds palatalization.
Slug
(regional) A stranger picked up as a passenger to enable legal use of high occupancy vehicle lanes.
Bleed
To (cause to) extend to the edge of the page, without leaving any margin.
Slug
A hitchhiking commuter.
Bleed
To lose money.
Most of the sectors are bleeding, particularly the resources sector.
Slug
(web design) The last part of a clean URL, the displayed resource name, similar to a filename.
Bleed
An incident of bleeding, as in haemophilia.
Slug
(obsolete) A hindrance, an obstruction.
Bleed
A system for tapping hot, high-pressure air from a gas turbine engine for purposes such as cabin pressurization and airframe anti-icing.
When taking off at high altitude or at near-maximum weight, the bleeds have to be turned off temporarily, as they decrease engine power somewhat.
Slug
A ship that sails slowly.
Bleed
(printing) A narrow edge around a page layout, to be printed but cut off afterwards (added to allow for slight misalignment, especially with pictures that should run to the edge of the finished sheet).
Slug
To hit A hard blow, usually with the fist.
Bleed
(sound recording) The situation where sound is picked up by a microphone from a source other than that which is intended.
Slug
To drink quickly; to gulp; to down.
Bleed
The removal of air bubbles from a pipe containing other fluids.
Slug
To take part in casual carpooling; to form ad hoc, informal carpools for commuting, essentially a variation of ride-share commuting and hitchhiking.
Bleed
The phenomenon of in-character feelings affecting a player's feelings or actions outside of the game.
Slug
To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel.
Bleed
To emit blood; to lose blood; to run with blood, by whatever means; as, the arm bleeds; the wound bled freely; to bleed at the nose.
Slug
To move slowly or sluggishly; to lie idle.
Bleed
To withdraw blood from the body; to let blood; as, Dr. A. bleeds in fevers.
Slug
(transitive) To load with a slug or slugs.
To slug a gun
Bleed
To lose or shed one's blood, as in case of a violent death or severe wounds; to die by violence.
The lamb thy riot dooms to bleed to-day.
Slug
To make sluggish.
Bleed
To issue forth, or drop, as blood from an incision.
For me the balm shall bleed.
Slug
(transitive) To hit very hard, usually with the fist.
He insulted my mother, so I slugged him.
The fighter slugged his opponent into unconsciousness.
Bleed
To lose sap, gum, or juice; as, a tree or a vine bleeds when tapped or wounded.
Slug
A drone; a slow, lazy fellow; a sluggard.
Bleed
To pay or lose money; to have money drawn or extorted; as, to bleed freely for a cause.
Slug
A hindrance; an obstruction.
Bleed
To let blood from; to take or draw blood from, as by opening a vein.
Slug
Any one of numerous species of terrestrial pulmonate mollusks belonging to Limax and several related genera, in which the shell is either small and concealed in the mantle, or altogether wanting. They are closely allied to the land snails.
Bleed
To lose, as blood; to emit or let drop, as sap.
A decaying pine of stately size, bleeding amber.
Slug
Any smooth, soft larva of a sawfly or moth which creeps like a mollusk; as, the pear slug; rose slug.
Bleed
To draw money from (one); to induce to pay; as, they bled him freely for this fund.
Slug
A ship that sails slowly.
His rendezvous for his fleet, and for all slugs to come to, should be between Calais and Dover.
Bleed
Lose blood from one's body
Slug
An irregularly shaped piece of metal, used as a missile for a gun.
Bleed
Draw blood;
In the old days, doctors routinely bled patients as part of the treatment
Slug
A thick strip of metal less than type high, and as long as the width of a column or a page, - used in spacing out pages and to separate display lines, etc.
Bleed
Get or extort (money or other possessions) from someone;
They bled me dry--I have nothing left!
Slug
To move slowly; to lie idle.
To slug in sloth and sensual delight.
Bleed
Be diffused;
These dyes and colors are guaranteed not to run
Slug
To make sluggish.
Bleed
Drain of liquid or steam;
Bleed the radiators
The mechanic bled the engine
Slug
To load with a slug or slugs; as, to slug a gun.
Bleed
To lose blood from the body.
The cut was so deep that it started to bleed.
Slug
To strike heavily.
Slug
To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel; - said of a bullet when fired from a gun, pistol, or other firearm.
Slug
A projectile that is fired from a gun
Slug
An idle slothful person
Slug
Any of various terrestrial gastropods having an elongated slimy body and no external shell
Slug
Strike heavily, especially with the fist or a bat;
He slugged me so hard that I passed out
Slug
Be idle; exist in a changeless situation;
The old man sat and stagnated on his porch
He slugged in bed all morning
Slug
A hard blow or punch.
He gave the intruder a slug on the chin.
Slug
A line of type that is cast as a single piece.
The typographer set a slug for the headline.
Common Curiosities
Are Slug and Bleed interchangeable in printing?
No, Slug is a non-printing area, while Bleed is the extension of printed imagery.
Does Bleed always refer to a loss of blood?
No, it can mean the escape of any liquid or metaphorical draining.
What is the purpose of a Slug in printing?
It provides space for job details or printing instructions outside the bleed area.
Can Bleed be an emotional term?
Yes, as in "my heart bleeds for you," denoting sympathy or sorrow.
Why would someone use a Slug in a vending machine?
Fraudulently, to mimic a coin without spending actual money.
Can Slug refer to a creature?
Yes, it's a common name for certain gastropods.
Is a Slug always a slow creature?
Generally, yes. Slugs move slowly using a muscular foot.
How are Slug and Bleed related in the context of printing?
Both relate to margins and borders, with Slug being outside the Bleed.
What's the metaphorical usage of Slug?
It can denote a heavy blow or sudden effort.
Can Bleed denote the merging of colors?
Yes, like when two wet colors merge on paper.
How can one prevent colors from bleeding in artwork?
Using quality materials, drying properly, and sometimes using sealants can help.
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Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.