coun‧ter‧foil /ˈkaʊntəfɔɪl $ -tər-/
noun [countable][
Date: 1700-1800;
Origin: counter- + foil 'piece of paper, counterfoil' (15-18 centuries) (from Old French; ⇒ foil1)]
the part of something such as a cheque that you keep as a record
[TahlilGaran] Dictionary of Contemporary English ▲