Source : Webster's Revised Unabridged Dictionary (1913)

Aristate \A*ris"tate\, a. [L. aristatus, fr. arista. See
   {Arista}.]
   1. (Bot.) Having a pointed, beardlike process, as the glumes
      of wheat; awned. --Gray.

   2. (Zo["o]l.) Having a slender, sharp, or spinelike tip.