Meaning of “knock sb's block off” in the English Dictionary

british dictionary

"knock sb's block off" in British English

See all translations

knock sb's block off

informal

If you say that you will knock someone's block off, you are threatening to hit them very hard, especially on the head:

I'll knock his block off if he tries anything with me!

(Definition of “knock sb's block off” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)