DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   doubles \dou"bles\ n.
      1. badminton played with two players on each side.
         [WordNet 1.5]
      2. tennis played with two players on each side.
         [WordNet 1.5]