trade-in

trade-in
ˈtrade-in noun [countable]
American English a used car, piece of equipment etc that you give to a seller of a new one that you are buying as part of the payment
   SYN  part exchange British English:
    Are you going to give your Ford as a trade-in?
    trade-in price/value
    The trade-in value is roughly $3000.

trade-inBrE /ˈtreɪd ɪn/ 🔊NAmE /ˈtreɪd ɪn/ 🔊 nouna method of buying sth by giving a used item as part of the payment for a new one; the used item itself 折旧贴换交易；以旧折价换新；折价旧物◆the trade-in value of a car一辆汽车的以旧换新抵价◆Do you have a trade-in? 你有折价的旧物品吗？🔊🔊  ➡  see also part exchange