galea

from WordNet (r) 3.0 (2006)

galea
    n 1: an organ shaped like a helmet; usually a vaulted and
         enlarged petal as in Aconitum

from The Collaborative International Dictionary of English v.0.48

Galea \Ga"le*a\, n. [L., a helmet.]
   1. (Bot.) The upper lip or helmet-shaped part of a labiate
      flower.
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   2. (Surg.) A kind of bandage for the head.
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   3. (Pathol.) Headache extending all over the head.
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   4. (Paleon.) A genus of fossil echini, having a vaulted,
      helmet-shaped shell.
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   5. (Zool.) The anterior, outer process of the second joint of
      the maxillae in certain insects.
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