\Coun"ter*foil`\ (-foil), n. [Counter- + foil a
leaf.]
1. That part of a tally, formerly in the exchequer, which was
   kept by an officer in that court, the other, called the
   stock, being delivered to the person who had lent the king
   money on the account; -- called also {counterstock}.
   [Eng.]

2. The part of a writing (as the stub of a bank check) in
   which are noted the main particulars contained in the
   corresponding part, which has been issued.