Source : Webster's Revised Unabridged Dictionary (1913)

Pulvinate \Pul"vi*nate\, Pulvinated \Pul"vi*na`ted\, a. [L.
   pulvinatus, fr. pulvinus a cushion, an elevation.]
   1. (Arch.) Curved convexly or swelled; as, a pulvinated
      frieze. --Brande & C.

   2. (Zo["o]l.) Having the form of a cushion.