Source : Webster's Revised Unabridged Dictionary (1913)

Newmarket \New"mar`ket\, n. [From Newmarket, England.]
   A long, closely fitting cloak.

Source : WordNet®

newmarket
     n 1: a long close-fitting coat worn for riding in the 19th
          century
     2: a gambling card game in which chips are placed on the ace
        and king and queen and jack of separate suits (taken from
        a separate deck); a player plays the lowest card of a suit
        in his hand and successively higher cards are played until
        the sequence stops; the player who plays a card matching
        one in the layout wins all the chips on that card [syn: {Michigan},
         {Chicago}, {boodle}, {stops}]