castor meaning and definition

CASTOR noun

Definition of Castor (noun)

1. a multiple star with 6 components; second brightest in Gemini; close to Pollux
   • synonyms: Alpha Geminorum
2. a shaker with a perforated top for sprinkling powdered sugar
   • synonyms: caster
3. a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable
   • synonyms: caster
4. a hat made with the fur of a beaver (or similar material)
   • synonyms: beaver
5. type genus of the Castoridae: beavers
   • synonyms: genus Castor