drudge in WordNet English dictionary

1. work hard
   "She was digging away at her math homework"; "Lexicographers drudge all day long"
   labor  labour  toil  fag  travail  grind  drudge  dig  moil 
   

1. a laborer who is obliged to do menial work
   drudge  peon  navvy  galley slave 
   
2. one who works hard at boring tasks
   hack  drudge  hacker