Castor

·noun ·see Caster, a small wheel.

II. Castor ·noun A heavy quality of broadcloth for overcoats.

III. Castor ·noun A hat, ·esp. one made of beaver fur; a beaver.

IV. Castor ·noun ·Alt. of Castorite.

V. Castor ·noun Castoreum. ·see Castoreum.

VI. Castor ·noun A genus of rodents, including the beaver. ·see Beaver.

VII. Castor ·noun the northernmost of the two bright stars in the constellation Gemini, the other being Pollux.