The Collaborative International Dictionary of English v.0.48:

Quatorze \Qua*torze"\, n. [F. quatorze fourteen, L.
   quattuordecim. See Fourteen.]
   The four aces, kings, queens, knaves, or tens, in the game of
   piquet; -- so called because quatorze counts as fourteen
   points.
   [1913 Webster]