Noun

1. Any of many terrestrial pulmonate gastropod mollusks, having no (or only rudimentary) shell
2. 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.
3. A discrete quantity of one fluid that flows though the line surrounded by another.
4. A bullet.
5. A counterfeit coin, especially one used to steal from vending machines.
6. A shot of a drink, usually alcoholic.
7. A title, name or header
8. A lazy person, a sluggard.
9. A black screen.
10. A piece of type metal imprinted by a Linotype machine; also a black mark placed in the margin to indicate an error.
11. A stranger picked up as a passenger to enable legal use of high occupancy vehicle lanes.

Verb

1. To drink quickly; to gulp.
2. To down a shot.
3. To hit very hard.

   He insulted my mother, so I slugged him.

   The batter slugged the ball out of the park.