Source : Webster's Revised Unabridged Dictionary (1913)

Yang \Yang\, n. [Of imitative origin.]
   The cry of the wild goose; a honk.

Yang \Yang\, v. i.
   To make the cry of the wild goose.

Source : WordNet®

yang
     n : the bright positive masculine principle in Chinese dualistic
         cosmology; "yin and yang together produce everything that
         comes into existence" [ant: {yin}]