rebate

n. /ˈriːbeɪt/ C1

退款；回扣；折扣

An amount of money returned to you after paying too much.

仙境例句

The Hatter asked for a rebate on his tea, since he had never finished it.

帽匠要求退还一部分茶钱，因为他的茶一直没喝完。