The Collaborative International Dictionary of English v.0.48:

Sled \Sled\ (sl[e^]d), n. [Akin to D. slede, G. schlitten, OHG.
   slito, Icel. sle[eth]i, Sw. sl[aum]de, Dan. sl[ae]de, and E.
   slide, v. See Slide, and cf. Sledge a vehicle, Sleigh.]
   1. A vehicle on runners, used for conveying loads over the
      snow or ice; -- in England called sledge.
      [1913 Webster]

   2. A small, light vehicle with runners, used, mostly by young
      persons, for sliding on snow or ice.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sled \Sled\, v. t. [imp. & p. p. Sledded; p. pr. & vb. n.
   Sledding.]
   To convey or transport on a sled; as, to sled wood or timber.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sled
    n 1: a vehicle mounted on runners and pulled by horses or dogs;
         for transportation over snow [syn: sled, sledge,
         sleigh]
    v 1: ride (on) a sled [syn: sled, sleigh]