1. Proper noun.  (Greek mythology) One of the Dioscuri.
  2. Proper noun.  (star) A double star in the constellation Gemini; alpha (α) Geminorum.
  3. Noun.  A pivoting roller attached to the bottom of furniture to allow it to be moved.
  4. Noun.  A hat made from the fur of the beaver.
  5. Noun.  A caster; a container with perforated cap for sprinkling (e.g. ''pepper-castor'').

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This entry was last updated on RefTopia from its source on 3/20/2012.