The Collaborative International Dictionary of English v.0.48:

Flapjack \Flap"jack`\ (fl[a^]p"j[a^]k`), n.
   1. A flat cake turned on the griddle while cooking; a
      griddlecake or pancake.
      [1913 Webster]

   2. A fried dough cake containing fruit; a turnover. [Prov.
      Eng.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

flapjack
    n 1: a flat cake of thin batter fried on both sides on a griddle
         [syn: pancake, battercake, flannel cake, flannel-
         cake, flapcake, flapjack, griddlecake, hotcake,
         hot cake]