There are 2 definitions of slug in English:

slug1

Syllabification: slug
Pronunciation: /sləɡ
 
/

noun

1A tough-skinned terrestrial mollusk that typically lacks a shell and secretes a film of mucus for protection. It can be a serious plant pest. See also sea slug.
  • Order Stylommatophora, class Gastropoda
More example sentences
  • Slugs and snails are mainly nocturnal, and the sun's heat can be fatal to slugs and to all mollusc eggs, so cultivate the soil thoroughly to bring them to the surface.
  • Centipedes also eat slugs and smaller insect pests.
  • Twenty slugs were filmed while receiving 10 swim-eliciting tail stimuli at a 2 min inter-trial interval.
2A slow, lazy person; a sluggard.
More example sentences
  • If there's somebody sitting around saying, you know, I'm just a lazy slug, my first question is, ‘are you?’
  • The memos are self-defeating in that regard - why would the sort of low life slug who would write such a thing actually care enough to write such a thing?
  • And maybe everything has added up to make a big old apathetic slug.
3An amount of an alcoholic drink, typically liquor, that is gulped or poured: he took a slug of whiskey
[ mid 18th century: figuratively from sense 4 of the noun]
More example sentences
  • Hearty Aussie reds like the latter go happily in a sangria-style mix - slip a couple of orange slices into each glass and add a whoosh of soda water, a clunk of ice-cubes and a slug of brandy if it's raining.
  • Makes around 4 litres of cordial (which you can kick up a notch with a splash of soda water and a slug of your favourite gin).
  • The last straw comes when three old Russian ladies snub my invitation to join our flotilla, dog-paddling away as if no one had ever offered them a slug of beer through a ten-foot hose.
4An elongated, typically rounded piece or metal: the reactor uses embedded slugs of uranium
More example sentences
  • For the first time in nearly two thousand years everyone everywhere was paying for everyday articles using slugs of base metal.
  • For smaller vessels, this may be as easy as firing a copper slug into an outboard engine.
  • I would have been shocked if we had because he was using an air gun with an enormous piece of slug instead of birdshot.
4.1A counterfeit coin; a token.
4.2chiefly North American A bullet, especially one of lead.
More example sentences
  • What it means to us is that the old lead slug is forcibly and consistently centered in the bore from shot-to-shot, producing improved accuracy.
  • Modern autopsy found a .36 caliber lead slug lodged in the bones of the dorsal chest, exactly consistent with the wound described by the James family.
  • Propelled through the air with an accompanying plume of sulphurous smoke, yet another lead slug tore through the wooden board which happened to be today's target.
Synonyms
bullet, shot, cartridge
4.3A missile for an air gun.
More example sentences
  • I subsequently had a look and there were about 60 slugs from an air gun, all over the place on my property, the trajectory of which had obviously come over the kindergarten.
4.4A line of type in Linotype printing.
More example sentences
  • Monotype machines cast single sorts; it was Linotypes that cast slugs.
  • For those who recall the Imperial typewriter, the copy-takers and slugs of type set in hot metal, it is the next stage in the ongoing media revolution.
4.5 Printing A metal bar used in spacing.
5 Computing A part of a URL which identifies a particular page on a website in a form readable by users: writers can edit the slug that will become an article or page URL
More example sentences
  • This has happened to most of us at one point or another: We start optimizing a website's URL structure or permalink slugs to be more user- and SEO-friendly, and we end up forgetting about an old URL that dozens of websites were already linking to.
  • You just add the episode number to the slug or permalink of your podcasts.
  • This function is what WordPress will use to generate the URL slugs from your post titles.

verb (slugs, slugging, slugged)

[with object] Back to top  
Drink (something, typically alcohol) in a large draft; swig: she picked up her drink and slugged it straight back
More example sentences
  • She slugged the first drink down smoothly, then without any hesitation she grabbed the other drink and slugged it down too.
  • Matt picked up the champagne bottle and slugged the wine straight down.
  • She now slugged the remainder of her drink back in an attempt to numb her irritation.

Origin

late Middle English (sense 2 of the noun): probably of Scandinavian origin; compare with Norwegian dialect slugg 'large heavy body'. Sense 1 dates from the early 18th century.

Definition of slug in:

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Pronunciation: əˈpilēən
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There are 2 definitions of slug in English:

slug2

Syllabification: slug
Pronunciation: /sləɡ
 
/
informal , chiefly North American

verb (slugs, slugging, slugged)

[with object]
1Strike (someone) with a hard blow: he was the one who’d get slugged
More example sentences
  • There they gather short, or editor-shortened, letters in which correspondents with opposing views slug away at each other on a topic selected by the editor.
  • The man gave Mr. Love one huge slug in the face just as Tommy and Joe, the security guards, hurried up the stairs, Tommy huffing frantically.
  • It wasn't a ladylike slap, it was an all-out, full-fisted slug to the jaw that could have broken his nose if she had been aiming for it.
1.1 (slug it out) Settle a dispute or contest by fighting or competing fiercely: they went outside to slug it out
More example sentences
  • After jabbing him early on, Rigby let his warrior instincts get the better of him and he ended up slugging it out in a fight which had the Wythenshawe Forum crowd on its feet.
  • Students in York have been slugging it out in a competition to find the most popular piece of art in a city bar.
  • Contestants slug it out to be the best news reader on TV and the winner goes into a head to head clash with Ms Bailey, as the viewer decides who gets the $800,000-a-year job.

noun

Back to top  
A hard blow.
More example sentences
  • Adam frowned and gave him a hard slug in the shoulder.
  • The final slug landed between Furchtner's eyes, and he tumbled out the window.

Origin

mid 19th century: of unknown origin; compare with the verb slog.

Definition of slug in: