noun, noun or participle which takes 'suru'
trick riding
Refers to performing acrobatic or stunt riding, typically on a horse or bicycle. Can be used as a noun or with する to describe the action.
彼は曲乗りの達人だ。
He is a master of trick riding.
サーカスで曲乗りをする。
I do trick riding at the circus.
Compound of 曲 (kyoku, 'trick' or 'acrobatic') and 乗り (nori, 'riding'). The exact historical derivation is uncertain.