slug

noun21

1. •
   Any of many gastropod mollusks, having no (or only a rudimentary) shell.
2. •
   A bullet or other projectile fired from a firearm; in modern usage, generally refers to a shotgun slug.

   • […] all our Ammunition was spent. Those of us who had Money made Slugs of it; their next Shift was to take the middle Screws out of their Guns, and charge their Pieces with them. — 1743
3. •
   A hard blow, usually with the fist.
4. •
   A shot of a drink, usually alcoholic.
5. •
   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.
6. •
   The last part of a clean URL, the displayed resource name, similar to a filename.
7. •
   A block of text at the beginning of a scene that sets up the scene's location, characters, etc.
8. •
   A ship that sails slowly.

   • His rendezvous for his fleet, and for all sluggs to come to, should be between Calais and Dover. — 1666
9. •
   A counterfeit coin, especially one used to steal from vending machines.
10. •
    A solid block or piece of roughly shaped metal.
11. •
    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. •
    A discrete mass of a material that moves as a unit, usually through another material.

    • This is perhaps best done by considering a unit cell consisting of one bubble and part of the liquid slugs on each side of it… — 1969
13. •
    (rare) 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.

    • The average slug has a mass of around 0.00002 slugs.
14. •
    A stranger picked up as a passenger to enable legal use of high occupancy vehicle lanes.
15. •
    (US, slang) A hitchhiking commuter.
16. •
    A motile pseudoplasmodium formed by amoebae working together.
17. •
    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.
18. •
    A black screen used to separate broadcast items.
19. •
    An infertile egg of a reptile.
20. •
    (no longer used) A slow, lazy person; a sluggard.
21. •
    (no longer used) A hindrance, an obstruction.

    • money would be stirring, if it were not for this slug — 1625

verb7

1. •
   To hit very hard, usually with the fist.

   • He insulted my mother, so I slugged him.
   • The fighter slugged his opponent into unconsciousness.
2. •
   To drink quickly; to gulp; to down.
3. •
   To take part in casual carpooling; to form ad hoc, informal carpools for commuting, essentially a variation of ride-share commuting and hitchhiking.

   • "We believe in car-pooling, but let's do it without restricting traffic. ..." Sam Snyder, 51, of Burke, who has been slugging to his job at the US Customs .... — 1998
4. •
   To make sluggish.

   • So little do we fear , you slug you — 1692
5. •
   To load with a slug or slugs.
6. •
   To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel.
7. •
   (no longer used) To move slowly or sluggishly; to lie idle.

   • To slug in slouth and sensuall delights. — 1590

noun1

1. •
   (US, informal) A special-purpose security of the State and Local Government Series.