track bicycle; fixed-gear bike
A bicycle designed for track racing, typically with a fixed gear and no brakes. In Japanese, it often refers to the bike itself, not just the rider.
wasei (Japanese coinage from French), from piste · wasei-eigo (Japanese-coined English), from racer
He is riding a track bicycle at the velodrome.
A track bicycle cannot be ridden on public roads because it has no brakes.
Variant spelling with a middle dot; less common but still seen.
Wasei-eigo from French 'piste' (track) and English 'racer', referring to a track racing bicycle.