The Collaborative International Dictionary of English v.0.48:

Falcade \Fal*cade"\ (f[a^]l*k[=a]d"), n. [F., ultimately fr. L.
   falx, falcis, a sickle or scythe.] (Man.)
   The action of a horse, when he throws himself on his haunches
   two or three times, bending himself, as it were, in very
   quick curvets. --Harris.
   [1913 Webster] Falcate