Noisy bike accessory (4)

I believe the answer is:

horn

(Other definitions for horn that I've seen before include "Head appendage; warning instrument" , "Musical instrument; Chile Cape" , "Musical instrument - antler" , "Head growth; cornucopia" , "Possession of huntsman or deer" .)

I've seen this clue in the USA Today.

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.