Source : Webster's Revised Unabridged Dictionary (1913)

Glissade \Glis*sade"\, n. [F., fr. glisser to slip.]
   1. A sliding, as down a snow slope.

   2. A dance step consisting of a glide or slide to one side.

Glissade \Glis`sade"\, n. [F., fr. glisser to slip.]
   A sliding, as down a snow slope in the Alps. --Tyndall.

Source : WordNet®

glissade
     n : (ballet) a gliding or sliding step in ballet
     v : perform a glissade, in ballet