The Collaborative International Dictionary of English v.0.48:

Fives \Fives\ (f[imac]vz), n. pl.
   A kind of play with a ball against a wall, resembling tennis;
   -- so named because three fives, or fifteen, are counted to
   the game. --Smart.
   [1913 Webster]

   Fives court, a place for playing fives.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fives \Fives\, n. [See Vives.]
   A disease of the glands under the ear in horses; the vives.
   --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

fives
    n 1: a game resembling handball; played on a court with a front
         wall and two side walls