swig in WordNet English dictionary

1. a large and hurried swallow
   "he finished it at a single gulp"
   gulp  draft  draught  swig 
   

1. to swallow hurriedly or greedily or in one draught
   "The men gulped down their beers"
   gulp  quaff  swig 
   
2. strike heavily, especially with the fist or a bat
   "He slugged me so hard that I passed out"
   slug  slog  swig