slug in WordNet English dictionary

1. (boxing) a blow with the fist
   "I gave him a clout on his nose"
   punch  clout  poke  lick  biff  slug 
   
2. a projectile that is fired from a gun
   bullet  slug 
   
3. any of various terrestrial gastropods having an elongated slimy body and no external shell
   slug 
   
4. a strip of type metal used for spacing
   type slug  slug 
   
5. an amount of an alcoholic drink (usually liquor) that is poured or gulped
   "he took a slug of hard liquor"
   slug 
   
6. an idle slothful person
   sluggard  slug 
   
7. a counterfeit coin
   slug 
   
8. a unit of mass equal to the mass that accelerates at 1 foot/sec/sec when acted upon by a force of 1 pound; approximately 14.5939 kilograms
   slug 
   

1. be idle; exist in a changeless situation
   "The old man sat and stagnated on his porch"; "He slugged in bed all morning"
   idle  laze  slug  stagnate 
   
2. strike heavily, especially with the fist or a bat
   "He slugged me so hard that I passed out"
   slug  slog  swig