DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   Reuben
       n 1: (Old Testment) a son of Jacob and forefather of one of the
            tribes of Israel
       2: a hot sandwich with corned beef and Swiss cheese and
          sauerkraut on rye bread