boko-tto
Describes a sudden deformation of a surface — denting inward from impact or bulging outward. A single, pronounced change in shape.
💡A car fender after a bump — 'The fender was dented boko-tto from the impact.'
ボールが当たって壁がぼこっとへこんだ。
The wall dented boko-tto where the ball hit it.
The car door ___ dented inward after the minor collision.
軽い衝突で車のドアが○○とへこんだ。