DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Barrage \Bar"rage\, n. [F., fr. barrer to bar, from barre bar.]
      (Engin.)
      An artificial bar or obstruction placed in a river or
      watercourse to increase the depth of water; as, the barrages
      of the Nile.
      [1913 Webster]