Definition of "voucher"

voucher

/ˈvaʊt͡ʃə(ɹ)/

noun
plural vouchers
1. A piece of paper that entitles the holder to a discount, or that can be exchanged for goods and services.
2. A receipt.
3. One who or that which vouches.
  Quotations
  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, The New Sporting Magazine, (Please provide the book title or journal name), volume 11, page 227
4. (advertising) A copy of a published advertisement sent by the agency to the client as proof of publication.
  Quotations
  Most agencies also have a vouchers department. It is its responsibility to obtain a copy of every advertisement that appears in print. It supplies the accounts department with the relevant newspaper or magazine, which is affixed to the agency's invoice for the space.
  2014, Nigel Linacre, Advertising for Account Holders (RLE Marketing), page 9
5. (historical) A mechanical device used in shops for automatically registering the amount of money drawn.
verb
third-person singular simple present vouchers, present participle vouchering, simple past and past participle vouchered
1. (transitive) To establish the authenticity of; to vouch for.
2. (transitive) To provide a vouch for (an expenditure).
3. (transitive) To provide (a beneficiary) with a voucher.