1. (

• labor ,
• labour ,
• toil ,
• fag ,
• travail ,
• grind ,
• drudge ,
• dig ,
• moil

) work hard; "She was digging away at her math homework"; "Lexicographers drudge all day long" ;

2. (

• churn ,
• boil ,
• moil ,
• roil

) be agitated; "the sea was churning in the storm" ;

3. (

• moil

) moisten or soil; "Her tears moiled the letter" ;