voucher
1. [ noun ] someone who vouches for another or for the correctness of a statement
Synonyms: verifier
Related terms: supporter verify
2. [ noun ] (writing) a document that serves as evidence of some expenditure
Related terms: document
3. [ noun ] (writing) a negotiable certificate that can be detached and redeemed as needed
Synonyms: coupon
Related terms: commercial_document book_token twofer luncheon_voucher
Similar spelling:   voicer
  voyager