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The Collaborative International Dictionary
Pulvinate

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.

Wiktionary
pulvinate

a. 1 (context architecture English) Curved convexly or swelled. 2 (context zoology English) Having the form of a cushion.