Bicyclist is a synonym of biker.
As nouns the difference between biker and bicyclist
is that biker is a person who rides a bicycle while bicyclist is one who rides a bicycle, particularly one who does so regularly, or as an enthusiast.
biker
English
Noun
(
en noun)
A person who rides a bicycle.
A person whose lifestyle is centered on motorcycles, sometimes a member of an outlaw motorcycle club.
Synonyms
* (1) bikie , motorcyclist
* (2) cyclist
See also
* trucker
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bicyclist
English
Noun
(
en noun)
One who rides a bicycle, particularly one who does so regularly, or as an enthusiast.
Synonyms
* biker
* cyclist