STAMP

stamp, n. An official mark or seal placed on a document, esp. to indicate that a required tax (such as duty or excise tax) has been paid. [Cases: Bills and Notes 56; Internal Revenue 4390–4409; Taxation 105.5, 1212. 1. C.J.S. Bills and Notes; Letters of Credit§ 31; Taxation §§ 167, 1681–1692, 1995, 2002–2003, 2007.]