noun
A ticket or voucher that entitles the holder to use a service, facility, or product. Common in contexts like public transport, events, or promotional offers.
この利用券で温泉に入れます。
You can enter the hot spring with this voucher.
利用券を提示すると割引になります。
Presenting the coupon gives you a discount.
クーポン is a discount coupon, whereas 利用券 can be a full-value voucher or ticket for a specific service.
Compound of 利用 (use, utilization) and 券 (ticket, certificate). A straightforward modern coinage.