Sharpen, like an appetite (4)

I believe the answer is:

whet

(Other definitions for whet that I've seen before include "Make more acute" , "Edge" , "Sharpen by rubbing" , "grind" , "'Sharpen, appetite say (4)'" .)

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.