1. n. Any of many terrestrial pulmonate gastropod mollusks, having no (or only a rudimentary) shell.
2. n. (obsolete) A slow, lazy person; a sluggard.
3. n. A bullet (projectile).
4. n. A counterfeit coin, especially one used to steal from vending machines.
5. n. A shot of a drink, usually alcoholic.
6. n. (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.
7. n. (physics, rarely used) 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.
8. n. A discrete mass of a material that moves as a unit, usually through another material.
9. n. A motile pseudoplasmodium formed by amoebae working together.
10. n. (television editing) A black screen.
11. n. (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.
12. n. (regional) A stranger picked up as a passenger to enable legal use of high occupancy vehicle lanes.
13. n. (US, slang) A hitchhiking commuter.
14. n. (web design) The last part of a clean URL, the displayed resource name, similar to a filename.
15. n. (obsolete) A hindrance, an obstruction.
16. n. A ship that sails slowly.
17. n. A hard blow, usually with the fist.
18. v. To drink quickly; to gulp; to down.
19. v. To hit very hard, usually with the fist.
He insulted my mother, so I slugged him.
The fighter slugged his opponent into unconsciousness.
20. v. To take part in casual carpooling; to form ad hoc, informal carpools for commuting, essentially a variation of ride-share commuting and hitchhiking.
21. v. (intransitive, of a bullet) To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel.
22. v. (obsolete, intransitive) To move slowly or sluggishly; to lie idle.
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