voucher Syllabification: (vouch·er)Pronunciation: /ˈvouCHər/Translate voucher | into French | into German | into Italian | into Spanish Definition of voucher noun a small printed piece of paper that entitles the holder to a discount or that may be exchanged for goods or services. a receipt. Origin: early 17th century: from vouchvoucher in other Oxford dictionaries Definition of voucher in the British & World English dictionary