castor

noun

1. 1

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

2. 2

   type genus of the Castoridae: beavers

3. 3

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

4. 4

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

5. 5

   a shaker with a perforated top for sprinkling powdered sugar