Definition as Noun

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

• Alpha Geminorum

• beaver

• caster

• caster

• genus Castor

• Castor vs Alpha Geminorum
• Castor vs beaver
• Castor vs caster
• Castor vs genus Castor