Tricycle

from WordNet (r) 3.0 (2006)

tricycle
    n 1: a vehicle with three wheels that is moved by foot pedals
         [syn: {tricycle}, {trike}, {velocipede}]

from The Collaborative International Dictionary of English v.0.48

Tricycle \Tri"cy*cle\, n. [Pref. tri- + cycle as inbicycle.]
   A three-wheeled velocipede. See Illust. under {Velocipede}.
   Cf. {Bicycle}.
   [1913 Webster]