Source : Webster's Revised Unabridged Dictionary (1913)

Cuish \Cuish\ (kw?s), n. [F. cuisse thigh, fr. L. coxa hip: cf.
   F. cuissard, OF, cuissot, armor for the thigh, cuish. Cf.
   {Hough}.]
   Defensive armor for the thighs. [ Written also {cuisse}, and
   quish.]