Definition of beaver
plural beavers
1
or plural beaver
a
: either of two large semiaquatic herbivorous rodents comprising a family (Castoridae including Castor canadensis of North America and C. fiber of Eurasia), having webbed hind feet and a broad flat scaly tail, and constructing dams and partially submerged lodges
b
: the fur or pelt of the beaver
2 a
: a hat made of beaver fur or a fabric imitation
b
: silk hat
3
: a heavy fabric of felted wool or of cotton napped on both sides
4
usually vulgar
: the pudenda of a woman
