galea

noun5

1. •
   A Roman helmet.
2. •
   A part of a flower or plant that is shaped like a helmet or hood.
3. •
   A mouthpart found in some species of insect; a flap that is part of the maxilla, so-called after the flaps attached to the sides of a Roman helmet.
4. •
   A kind of bandage for the head.
5. •
   A headache extending all over the head.