The Collaborative International Dictionary of English v.0.48:

Crocket \Crock"et\ (kr?k"?t), n. [OF. croquet, F. crochet, dim.
   of croc hook. See Crook, and cf. Crotchet.]
   1. (Arch.) An ornament often resembling curved and bent
      foliage, projecting from the sloping edge of a gable,
      spire, etc.
      [1913 Webster]

   2. A croche, or knob, on the top of a stag's antler.
      [1913 Webster]

            The antlers and the crockets.         --W. Black.
      [1913 Webster]

WordNet (r) 3.0 (2006):

crocket
    n 1: an architectural ornament of curved foliage used at the
         edge of a spire or gable