a fist fight; a mutual exchange of punches between people
昨夜、駅前で若者たちが殴り合いをしていた。
Last night, youths were having a fist fight in front of the station.
言い争いがエスカレートして殴り合いになった。
An argument escalated and turned into a fist fight.
けが人が出る前に、周りの人が殴り合いを止めた。
Before anyone got seriously hurt, bystanders stopped the fist fight.