Wordnet 3.0
NOUN (1)
1.
riding a bicycle;
The Collaborative International Dictionary of English v.0.48:
Bicycling \Bi"cy*cling\, n.
The use of a bicycle; the act or practice of riding a
bicycle.
[1913 Webster]
WordNet (r) 3.0 (2006):
bicycling
n 1: riding a bicycle