Definition from Wiktionary, the free dictionary
- Rhymes: -aɪkə(r)
biker (plural bikers)
- A person who rides a bicycle.
- A person whose lifestyle is centered on motorcycles, sometimes a member of an outlaw motorcycle club.
A person who rides a bicycle
A person whose lifestyle is centered on motorcycles, may be a member of an outlaw motorcycle club
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Translations to be checked
See also 
biker m and f (invariable)
- (motorcyclist) motociclista