/ˈvaʊtʃər/
vouch·er
BrE /ˈvaʊtʃə(r)/
NAmE /ˈvaʊtʃər/
a printed piece of paper that can be used instead of money to pay for sth, or that allows you to pay less than the usual price of sth
a voucher for a free meal
a travel voucher
This discount voucher entitles you to 10% off your next purchase.
➡ see also luncheon voucher