The Collaborative International Dictionary of English v.0.48:

Cucullate \Cu"cul*late\ (k?"k?l-l?t or k?-k?l"l?t), Cucullated
\Cu"cul*la`ted\ (-l?`t?d or -l?-t?d), a. [LL. cullatus, fr. L.
   cucullus a cap, hood. See Cowl a hood.]
   1. Hooded; cowled; covered, as with a hood. --Sir T. Browne.
      [1913 Webster]

   2. (Bot.) Having the edges toward the base rolled inward, as
      the leaf of the commonest American blue violet.
      [1913 Webster]

   3. (Zool.)
      (a) Having the prothorax elevated so as to form a sort of
          hood, receiving the head, as in certain insects.
      (b) Having a hoodlike crest on the head, as certain birds,
          mammals, and reptiles.
          [1913 Webster]