IPA: /ˈsaɪklɪst/
KK: /ˈsaɪklɪst/
A person who rides a bicycle or similar vehicle, often for sport or recreation.
The cyclist raced down the hill at high speed.
Cyclist → It is formed from "cycle" (from Greek "kyklos", meaning circle or wheel) and "-ist" (meaning one who practices or is concerned with). A cyclist is one who rides a bicycle, which is a vehicle with wheels.
Think of someone who is concerned with riding a 'circle' or 'wheel' — that's what a cyclist does.