Wordnet 3.0
NOUN (1)
1. 
 the bright positive masculine principle in Chinese dualistic cosmology; 
- Example: "yin and yang together produce everything that comes into existence"
The Collaborative International Dictionary of English v.0.48:
Yang \Yang\, n. [Of imitative origin.]
   The cry of the wild goose; a honk.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Yang \Yang\, v. i.
   To make the cry of the wild goose.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
yang \yang\, n. (Chinese philosophy)
   One of the two fundamental principles. See yin and yang.
   [PJC]
WordNet (r) 3.0 (2006):
yang
    n 1: the bright positive masculine principle in Chinese
         dualistic cosmology; "yin and yang together produce
         everything that comes into existence" [ant: yin]