1. n.1 in senses of RIDE v.
2 the practice or skill of riders of horses.
3 RIDE n. 3.
Phrases and idioms:
riding-light (or -lamp) a light shown by a ship at anchor. riding-school an establishment teaching skills in horsemanship.2. n.1 each of three former administrative divisions (East Riding, North Riding, West Riding) of Yorkshire.
2 an electoral division of Canada.
Etymology: OE thriding (unrecorded) f. ON thrithjungr third part f. thrithi THIRD: th- was lost owing to the preceding -t or -th of east etc.