a large, amphibious rodent of the genus Castor, having sharp incisors, webbed hind feet, and a flattened tail, noted for its ability to dam streams with trees, branches, etc.
2.
the fur of this animal.
3.
a flat, round hat made of beaver fur or a similar fabric.
4.
a tall, cylindrical hat for men, formerly made of beaver and now of a fabric simulating this fur. Compare opera hat, silk hat, top hat.
5.
Informal. a full beard or a man wearing one.
6.
Informal. an exceptionally active or hard-working person.
7.
Slang:Vulgar.
a.
a woman's pubic area.
b.
Offensive. a woman.
8.
Textiles.
a.
a cotton cloth with a thick nap, used chiefly in the manufacture of work clothes.
b.
(formerly) a heavy, soft, woolen cloth with a thick nap, made to resemble beaver fur.
9.
(initial capital letter) a native or inhabitant of Oregon, the Beaver State (used as a nickname).
–verb (used without object)
10.
British. to work very hard or industriously at something (usually fol. by away).
Origin: bef. 1000; ME bever, OE beofor, befor; c. G Biber, Lith bebrùs, L fiber, Skt babhrús reddish brown, large ichneumon
a piece of plate armor for covering the lower part of the face and throat, worn esp. with an open helmet, as a sallet or basinet. Compare buffe, wrapper(def. 7).
2.
a piece of plate armor, pivoted at the sides, forming part of a close helmet below the visor or ventail.
Origin: 1400–50; late ME bavier, bavour < MF baviere (OF: bib), equiv. to bave spit, dribble + -iere < L -āria, fem. of -ārius-ary; alteration of vowel in the initial syll. is unexplained
A large aquatic rodent of the genus Castor, having thick brown fur, webbed hind feet, a broad flat tail, and sharp incisors adapted for gnawing bark, felling trees, and constructing dams and underwater lodges.
The fur of this rodent.
A top hat originally made of the underfur of this rodent.
Vulgar Slang The female genitals.
Offensive & Vulgar Slang A woman or girl.
A napped wool fabric, similar to felt, used for outer garments.
Vulgar Slang The female genitals.
Offensive & Vulgar Slang A woman or girl.
adj.
Of or relating to a beaver or beavers: beaver fur; a beaver hat.
Constructed by beavers: beaver dams.
intr.v.
bea·vered, bea·ver·ing, bea·vers To work diligently and energetically.
[Middle English bever, from Old English beofor; see bher-2 in Indo-European roots.]
bea·ver 2 (bē'vər) n.
A piece of armor attached to a helmet or breastplate to protect the mouth and chin.
The visor on a helmet.
[Middle English bavier, from Old French baviere, child's bib, beaver, from bave, saliva.]
[bee-ver] 
noun, plural -vers, (especially collectively
) -ver for 1; verb