noun
bare knuckles; barehanded
Primarily used in martial arts contexts, especially boxing, to describe fighting without gloves. Can also refer more generally to being unarmed or using only one's hands.
ベアナックルでの試合は危険が伴う。
Bare-knuckle matches involve danger.
彼はベアナックルで相手に立ち向かった。
He faced his opponent barehanded.