coupon
noun [ C ] uk/ˈkuː.pɒn/ us/ˈkuː.pɑːn/
礼券;赠券;优惠券
a piece of paper that can be used to get something without paying for it, or at a reduced price
If you collect ten coupons from the newspaper, you can get a free beach towel. 从报纸上收集10张礼券你就可以免费得到一条沙滩浴巾。
UK（尤指报纸杂志上作为广告一部分的）资料索取券，索取样品单，查询单
a piece of paper, especially a part of an advertisement in a newspaper or magazine, that a reader can send to an organization in order to get information about its products or services
To find out more about our products, fill in the coupon and send it to us at the address given below. 如果想更多了解我们的产品，请填写本资料索取单，并按以下地址寄给我们。