noun, noun or participle which takes 'suru'
belay; belaying
Climbing term for securing a rope to protect a climber. Used as a noun for the act or system, and as a suru-verb for performing the action.
クライミングでは、ビレーが命綱になる。
In climbing, the belay is a lifeline.
彼はパートナーをしっかりビレーした。
He belayed his partner securely.
Borrowed from English 'belay', a climbing term.