godan verb (-ru), intransitive verb
throw a punch at; swing at; strike out at
Describes initiating a physical attack with fists, often with sudden or aggressive motion. The verb is intransitive but takes a target marked with に.
彼は突然、相手に殴りかかった。
He suddenly threw a punch at his opponent.
酔っ払いが通行人に殴りかかる事
There was an incident where a drunk person swung at a passerby.