noun
massive brawl; large-scale fight; melee
Refers to a chaotic, large-scale physical fight involving many people, often in public or in a competitive setting.
試合中に大乱闘が起きた。
A massive brawl broke out during the match.
昨夜のパーティーは大乱闘で終わった。
Last night's party ended in a huge fight.