1. (

• Castor ,
• Alpha_Geminorum

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

2. (

• caster ,
• castor ,

) a shaker with a perforated top for sprinkling powdered sugar ;

3. (

• caster ,
• castor ,

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

4. (

• beaver ,
• castor

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

5. (

• Castor ,
• genus_Castor

) type genus of the Castoridae: beavers ;