MEANING: noun: A boy or man who is an extremely enthusiastic follower of someone or something.
verb intr.: To behave in an obsessive way about someone or something.

ETYMOLOGY: From fan, short for fanatic, from Latin fanum (temple) + boy. Earliest documented use: 1919.

FANBOT - a computer program whose purpose is to cast (fraudulent) votes in an online popularity contest

TANBOY - a confirmed surfer (compare WANBOY, a confirmed sun avoider)

FANBAY - where the air-blowers are stored when not in use