counterfoil

名词 counterfoil:

1. the part of a check that is retained as a record
   同义词：stub, check stub

coun.ter.foil

n.（名词）
The part of a check or other commercial paper retained by the issuer as a record of a transaction.
存根，票根：由发行者保留的支票或其他商业票据的一部分，作为交易的记录