From Longman Dictionary of Contemporary Englishpolish somebody/something ↔ off phrasal verb informala) to finish food, work etc quickly or easily Sam polished off the rest of the pizza. b) American English to kill or defeat a person or animal when they are weak or wounded He was polished off with a shotgun blast to the face. → polish→ See Verb table
Examples from the Corpus
polish off• Don't keep painting over chipped or worn polish.• I couldn't stop him reforming, but when he came together all the polish was gone off.• No wind-chill to speak of, to polish us off.• She polished it off and began to chew on the ice. 