polish off polish off /ˈpɒlɪʃ ɔːf/

verb

1. () [Informal] Finish a task completely  ( finish off , mop up , wrap up [Informal] , clear up , finish up , get through , polish off [Informal] )
   finish a task completely
    I finally got through this homework assignment
   I finally got through this homework assignment
   
2. Finish eating all the food on one's plate or on the table  ( polish off , eat up , finish )
   finish eating all the food on one's plate or on the table
    She polished off the remaining potatoes
   She polished off the remaining potatoes
   
3. [Informal] Kill intentionally and with premeditation  ( dispatch , hit , off [Informal, N. American] , bump off [Informal] , murder , polish off [Informal] , remove , slay )
   kill intentionally and with premeditation
    The mafia boss ordered his enemies murdered
   The mafia boss ordered his enemies murdered