We found one dictionary that defines the word knock sth on the head:

General (1 matching dictionary)

1. knock sth on the head: Cambridge Advanced Learner's Dictionary

▸ Words similar to knock sth on the head ▸ Usage examples for knock sth on the head ▸ Idioms related to knock sth on the head ▸ Wikipedia articles (New!) ▸ Words that often appear near knock sth on the head ▸ Rhymes of knock sth on the head ▸ Invented words related to knock sth on the head