skittle ball

from WordNet (r) 3.0 (2006)

skittle ball
    n 1: ball used to knock down ninepins [syn: {ninepin ball},
         {skittle ball}]

from The Collaborative International Dictionary of English v.0.48

Skittle \Skit"tle\, a.
   Pertaining to the game of skittles.
   [1913 Webster]

   {Skittle alley}, an alley or court in which the game of
      skittles is played.

   {Skittle ball}, a disk or flattish ball of wood for throwing
      at the pins in the game of skittles.
      [1913 Webster]