fist fight
From Longman Dictionary of Contemporary Englishfist fightˈfist fight noun [countable] a fight in which people hit each other with their bare fistsExamples from the Corpusfist fight• While there, for whatever reason, he engaged himself in a fist fight with a man asking for money.• A fist fight followed, with much shouting and squabbling, until the ragged man succeeded in driving up to the door.