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.(Zool.) The anterior, outer process of the second joint of the maxillae in certain insects.
