1520s, originally "summoning of a person into court to warrant the title to a property, a calling to vouch;" see vouch. Meaning "receipt from a business transaction" is first attested 1690s; sense of "document which can be exchanged for goods or services" is attested from 1947.
例文
1. Would you mind initialing this voucher ?
レシートに頭文字で署名してください。
2.a voucher for a free meal
無料用食券
3.The government should run a voucher system.
政府は証憑制度を実施すべきである.
4.I still think it 's a bit of a cheek sending a voucher rather than a refund.
やはり、返金ではなくお得な買い物券を送ってくると思っています。厚かましいですね。
5.Take the voucher to your local branch of Woolworths and it will be redeemed for one toy.