DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   Au
       n 1: a soft yellow malleable ductile (trivalent and univalent)
            metallic element; occurs mainly as nuggets in rocks and
            alluvial deposits; does not react with most chemicals but
            is attacked by chlorine and aqua regia [syn: gold, Au,
            atomic number 79]
       2: a unit of length used for distances within the solar system;
          equal to the mean distance between the Earth and the Sun
          (approximately 93 million miles or 150 million kilometers)
          [syn: Astronomical Unit, AU]