The Collaborative International Dictionary of English v.0.48:

Playing \Play"ing\,
   a. & vb. n. of Play.
   [1913 Webster]

   Playing cards. See under Card.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "playing cards":
   ace, best bower, bower, cards, clubs, deck, deuce, diamonds, dummy,
   face cards, flush, full house, hand, hearts, jack, joker, king,
   knave, left bower, pack, pair, picture cards, queen, round,
   royal flush, rubber, ruff, singleton, spades, straight, trey,
   trick, trump