knight; cavalier; (Tw) bike rider (scooter, bicycle etc)

to ride a horse

cavalry

to ride a bike (motorbike or bicycle)

horse rider; equestrian; jockey; bike rider

saddle horse; mount

horse guard; imperial cavalry guard (of officials or eunuchs)

to ride (a horse, bicycle etc) naked

light cavalry; light motorcycle; moped

armored horses; crack horsemen