The Collaborative International Dictionary of English v.0.48:

Piquet \Piqu"et\, n.
   See Picket. [R.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Piquet \Pi*quet"\, n. [F., prob. fr. pique. See Pique, Pike,
   and Picket.]
   A game at cards played between two persons, with thirty-two
   cards, all the deuces, threes, fours, fives, and sixes, being
   set aside. [Written also picket and picquet.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

piquet
    n 1: a card game for two players using a reduced pack of 32
         cards
    2: a form of military punishment used by the British in the late
       17th century in which a soldier was forced to stand on one
       foot on a pointed stake [syn: picket, piquet]