Source : Webster's Revised Unabridged Dictionary (1913)

Badminton \Bad"min*ton\, n. [From the name of the seat of the
   Duke of Beaufort in England.]
   1. A game, similar to lawn tennis, played with shuttlecocks.

   2. A preparation of claret, spiced and sweetened.

Source : WordNet®

badminton
     n : a game played on a court with light long-handled rackets
         used to volley a shuttlecock over a net