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.