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Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   K2
       n 1: a mountain peak in the Karakoram Range in northern Kashmir;
            the 2nd highest peak in the world (28,250 feet high) [syn:
            K2, Godwin Austen, Mount Godwin Austen, Dapsang]