voucher

A piece of substantiating evidence; a proof.

A written record of expenditure, disbursement, or completed transaction.

A written authorization or certificate, especially one exchangeable for cash or representing a credit against future expenditures.

To substantiate or authenticate with evidence.

To prepare a voucher for.

To issue a voucher to.

One who vouchės, or gives attestation or confirmation; one who is surety for another.

A book, paper, document, or stamp which serves to prove the truth of accounts, or to confirm and establish facts of any kind; specifically, a receipt or other written evidence of the payment of money.

In old English law: The tenant in a writ of right; one who called in another to establish his warranty of title. In common recoveries there might be a single voucher or double vouchers. [Also written vouchor.] The calling in of a person to vouch.

One who vouches, or gives witness or full attestation, to anything.