biker

As a noun biker

is a person who rides a bicycle.

As a verb biked is

(bike).

As nouns the difference between hiker and biker

is that hiker is one who hikes, especially frequently while biker is a person who rides a bicycle.

As nouns the difference between bier and biker

is that bier is beer while biker is a person who rides a bicycle.

As nouns the difference between taxonomy and biker

is that taxonomy is the science or the technique used to make a classification while biker is a person who rides a bicycle.

As nouns the difference between dirtbag and biker

is that dirtbag is a dirty, grimy, sleazy, or disreputable person while biker is a person who rides a bicycle.

As nouns the difference between biker and nonbiker

is that biker is a person who rides a bicycle while nonbiker is one who is not a biker.

Motorbiker is a synonym of biker.

As nouns the difference between biker and motorbiker

is that biker is a person who rides a bicycle while motorbiker is a motorcyclist.

As nouns the difference between biker and grebo

is that biker is a person who rides a bicycle while grebo is (slang|uk|predominantly west midlands) a greaser or biker; a member of any alternative subculture, as opposed to a chav or townie.