(I'm a pig!) (4)

I believe the answer is:

oink

(Other definitions for oink that I've seen before include "it might be in a pen one hears" , "Swine sound" , "Pig's grunt" , "Beastly sound" , "Porcine sound" .)

I've seen this clue in the Universal.

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.