(bē′vər) noun
1. An amphibious rodent (family Castoridae), with a scaly, flat, oval tail and webbed hind feet, noted for skill in damming shallow streams: valued for its fur.
2. The fur of the beaver.
3. A high silk hat, originally made of this fur.
4. A heavy twill-woven woolen cloth with a napped finish, used for outer garments. [OE beofor]
BEAVER
(21/2 to 4 feet long, including tail)

(bē′vər) noun
1. A movable piece of medieval armor covering the lower part of the face, especially when worn with a vizor; later, both chinpiece and vizor.
2 Slang A beard. [<OF bavière child's bib <bave saliva]