Discount certificate (6)

I believe the answer is:

coupon

(Other definitions for coupon that I've seen before include "betting slip" , "Entry form" , "Token" , "means to buy goods" , "Voucher or ticket" .)

I've seen this clue in the Penny Press.

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.