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Castor

Pronunciation: /ˈkɑːstə/
Definition of Castor
  • 1 Greek Mythology the twin brother of Pollux. See Dioscuri.
  • 2 Astronomy the second-brightest star in the constellation Gemini, close to Pollux. It is a multiple star system, the three components visible in a moderate telescope being close binaries.

Castor in other Oxford dictionaries

Definition of Castor in the US English dictionary
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