Definitions of Castor:

  • noun:   type genus of the Castoridae: beavers
  • noun:   a multiple star with 6 components; second brightest in Gemini; close to Pollux
  • noun:   a hat made of beaver fur or similar material
  • noun:   a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable
  • noun:   a shaker with a perforated top for sprinkling powdered sugar
  • name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #5833)