Source : Webster's Revised Unabridged Dictionary (1913)

Galea \Ga"le*a\, n.[L., a helmet. ]
   1. (Bot.) The upper lip or helmet-shaped part of a labiate
      flower.

   2. (Surg.) A kind of bandage for the head.

   3. (Pathol.) Headache extending all over the head.

   4. (Paleon.) A genus of fossil echini, having a vaulted,
      helmet-shaped shell.

   5. (Zo["o]l.) The anterior, outer process of the second joint
      of the maxillae in certain insects.

Source : WordNet®

galea
     n : an organ shaped like a helmet; usually a vaulted and
         enlarged petal as in Aconitum
     [also: {galeae} (pl)]