DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   nan
       n 1: your grandmother
       2: the mother of your father or mother [syn: grandma,
          grandmother, granny, grannie, gran, nan, nanna]
       3: a river of western Thailand flowing southward to join the
          Ping River to form the Chao Phraya [syn: Nan, Nan River]
       4: leavened bread baked in a clay oven in India; usually shaped
          like a teardrop [syn: nan, naan]