Work on a hero, say (4)

I believe the answer is:

chew

(Other definitions for chew that I've seen before include "Bite and grind food in the mouth" , "Work or grind between teeth" , "Treat for dog" , "Ruminate" , "Gnaw" .)

I've seen this clue in The Washington Post.

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.