Source : Webster's Revised Unabridged Dictionary (1913)

Euchre \Eu"chre\, n. [Perh. from F. ['e]cart['e].]
   A game at cards, that may be played by two, three, or four
   persons, the highest card (except when an extra card called
   the Joker is used) being the knave of the same suit as the
   trump, and called right bower, the lowest card used being the
   seven, or frequently, in two-handed euchre, the nine spot.
   See {Bower}.

Euchre \Eu"chre\, v. t.
   1. To defeat, in a game of euchre, the side that named the
      trump.

   2. To defeat or foil thoroughly in any scheme. [Slang.]

Source : WordNet®

euchre
     n : a card game similar to ecarte; each player is dealt 5 cards
         and the player making trump must take 3 tricks to win a
         hand [syn: {five hundred}]