Pollux

from WordNet (r) 3.0 (2006)
Pollux
    n 1: the brightest star in Gemini; close to Castor
    
from The Collaborative International Dictionary of English v.0.48
Pollucite \Pol"lu*cite\, n. [See {Pollux}, and 4th {Castor}.]
   (Min.)
   A colorless transparent mineral, resembling quartz, occurring
   with castor or castorite on the island of Elba. It is a
   silicate of alumina and c[ae]sia. Called also {pollux}.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Pollux \Pol"lux\, n. [L., the twin brother of castor; also, the
   constellation.]
   1. (Astron.) A fixed star of the second magnitude, in the
      constellation Gemini. Cf. 3d {Castor}.
      [1913 Webster]

   2. (Min.) Same as {Pollucite}.
      [1913 Webster]
    
from Who Was Who: 5000 B. C. to Date
POLLUX

Leda's other twin.  (See Mother and Brother.)
    

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