skater

from WordNet (r) 3.0 (2006)

skater
    n 1: someone who skates

from The Collaborative International Dictionary of English v.0.48

Skater \Skat"er\, n.
   1. One who skates.
      [1913 Webster]

   2. (Zool.) Any one of numerous species of hemipterous insects
      belonging to {Gerris}, {Pyrrhocoris}, {Prostemma}, and
      allied genera. They have long legs, and run rapidly over
      the surface of the water, as if skating.
      [1913 Webster]