voucher /ˈvaʊt͡ʃə(ɹ)/noun 5verb 3forms 3 noun5 •A piece of paper or other token that entitles the holder to a discount, or that can be exchanged for goods and services.This voucher entitles the bearer to a 20% discount on frozen goods. •A receipt. •One who or that which vouches.To the fashionable world he cannot be a stranger […] and his having married a sister of the Duke of Leeds is a voucher for my assertion. — 1836 •A copy of a published advertisement sent by the agency to the client as proof of publication. •(historical) A mechanical device used in shops for automatically registering the amount of money drawn. verb3 •To provide (a beneficiary) with a voucher. •To establish the authenticity of; to vouch for. •To provide a vouch for (an expenditure). formsvouchered · vouchering · vouchers