toil

Noun

• productive work (especially physical work done for wages)
  • his labor did not require a great deal of skill
    

Verb

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

Related words

• Synonyms: 
  labor , labour , fag , travail , grind , drudge , dig , moil