castor, ŏris, m., = κάστωρ,
the castor , beaver; pure Lat. fiber: Castor fiber, Linn.; Plin. 32, 3, 13, § 26; cf. id. 8, 30, 47, § 109; Cic. ap. Isid. Orig. 12, 2, 21; Ov. Nux. 166; acc. castorem, Ap. Met. 1, 9, 2; castora, Juv. 12, 34.
castor ōris, m , κάστωρ, the castor, beaver, O.; acc.castora, Iu. ...
An Elementary Latin Dictionary
·noun ·see <<Caster>>, a small wheel. II. Castor ·noun A heavy quality of broadcloth for overcoats....
Webster's Dictionary of the English Language