DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   twins
       n 1: (mineralogy) two interwoven crystals that are mirror images
            on each other
       2: the third sign of the zodiac; the sun is in this sign from
          about May 21 to June 20 [syn: Gemini, Gemini the Twins,
          Twins]