drudge

Noun

• a laborer who is obliged to do menial work

• one who works hard at boring tasks

Verb

• work hard
  • She was digging away at her math homework
    
  • Lexicographers drudge all day long
    

Related words

• Synonyms: 
  peon , navvy , galley slave , hack , hacker , labor , labour , toil , fag , travail , grind , dig , moil