Sound made when crowing? (3)

I believe the answer is:

caw

I'm a little stuck... Click here to teach me more about this clue!

'sound' is the definition.
(caw is a kind of sound)

I can't explain the remainder of the clue.

(Other definitions for caw that I've seen before include "Rook's cry" , "Harsh cry of a crow" , "Cry of a rook" , "Crow's cry" , "Rook's call" .)

I've seen this clue in the Evening Standard.

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.