DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   adust
       adj 1: dried out by heat or excessive exposure to sunlight; "a
              vast desert all adust"; "land lying baked in the heat";
              "parched soil"; "the earth was scorched and bare";
              "sunbaked salt flats" [syn: adust, baked, parched,
              scorched, sunbaked]
       2: burned brown by the sun; "of an adust complexion"- Sir Walter
          Scott