What is the Latin word for beaver?

The usual Latin words for “beaver” are castor, fiber, buccula; also fibrīnus. The right choice depends on the sense; see the distinctions below.

English → Latin

“beaver” in Latin

castorbeaver fiberbeaver bucculalittle cheek or mouth; the beaver, part of a helmet which covers the mouth and cheeks; two cheeks, one on each side of t fibrīnusof the beaver

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

beaver

the animal, castor; fiber: of bearer, castoreus; fibrinus: skin of the beaver, pellis fibrina.

Beaver-hat, capitis tegimen (or tegumentum) e fibrinis pilis contextum.

A part of the helmet that covers the face, os galeae: buccula.

Quick answer

What is the Latin word for beaver?: The usual Latin words for “beaver” are castor, fiber, buccula; also fibrīnus. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.