a man's hat with a tall crown; usually covered with silk or with beaver fur
source: WordNet 3.0
a movable piece of armor on a medieval helmet used to protect the lower face
source: WordNet 3.0
a hat made with the fur of a beaver (or similar material)
source: WordNet 3.0
large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges
source: WordNet 3.0
An amphibious rodent, of the genus Castor.
source: Webster 1913
That piece of armor which protected the lower part of the face, whether forming a part of the helmet or fixed to the breastplate. It was so constructed (with joints or otherwise) that the wearer could raise or lower it to eat and drink.