Definitions of wheeler:

noun: the man at the outermost end of the rank in wheeling
noun: Scottish archaeologist (1890-1976)
noun: a draft horse harnessed behind others and nearest the wheels of a vehicle
noun: someone who makes and repairs wooden wheels
noun: a person who rides a bicycle
name: A surname (common: 1 in 1960 families; popularity rank in the U.S.: #208)