[vouch.er] n [MF vocher, voucher to vouch] (ca. 1523) 1: an act of vouching
2. a: a piece of supporting evidence: proof b: a documentary record of a business transaction c: a written affidavit or authorization: certificate d: a form or check indicating a credit against future purchases or expenditures
[2]voucher vt (1609) 1: to establish the authenticity of
2: to prepare a voucher for [3]voucher n [[1]vouch +
[2]-er] (1612) archaic: one that guarantees: surety