1. Castor, Alpha Geminorum

usage: a multiple star with 6 components; second brightest in Gemini; close to Pollux

2. caster, castor, shaker

usage: a shaker with a perforated top for sprinkling powdered sugar

3. caster, castor, roller

usage: a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable

4. beaver, castor, fur hat

usage: a hat made with the fur of a beaver (or similar material)

5. Castor, genus Castor, mammal genus

usage: type genus of the Castoridae: beavers

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See also: castor (Dictionary)