Crossword Genius

Knock on the head (4)

Ross

I believe the answer is:

(Another definition for bonk that I've seen is " Hit hard (on the head?)".)

I've seen this clue in the Universal, the USA Today and The New York Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.