Wordnet 3.0
NOUN (1)
1.
a vehicle with a single wheel that is driven by pedals;
[syn: unicycle, monocycle]
VERB (1)
1. ride a unicycle;
WordNet (r) 3.0 (2006):
unicycle
n 1: a vehicle with a single wheel that is driven by pedals
[syn: unicycle, monocycle]
v 1: ride a unicycle