Source : WordNet®

polish off
     v 1: finish a task completely; "I finally got through this
          homework assignment" [syn: {get through}, {wrap up}, {finish
          off}, {mop up}, {clear up}, {finish up}]
     2: kill intentionally and with premeditation; "The mafia boss
        ordered his enemies murdered" [syn: {murder}, {slay}, {hit},
         {dispatch}, {bump off}, {remove}]
     3: finish eating all the food on one's plate or on the table;
        "She polished off the remaining potatoes" [syn: {eat up},
        {finish}]