三さん角かく木もく馬ば

noun

wooden horse (torture/SM device)

A triangular wooden device historically used for torture and now associated with BDSM play. The term is niche and may not be widely known outside specific contexts.

• 中ちゅう世せいの拷ごう問もん具ぐとして三さん角かく木もく馬ばが使つかわれた。

  The wooden horse was used as a medieval torture device.

• SMプレイで三さん角かく木もく馬ばが使つかわれることがある。

  A wooden horse is sometimes used in SM play.