Sharp blow (to one or other ear) (4)

I believe the answer is:

clip

(Other definitions for clip that I've seen before include "Fastener; trim" , "Film extract; rapid pace" , "Spring-loaded holder" , "Cut, trim" , "rate" .)

I've seen this clue in The Guardian.

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.