godan verb (-ru)
brandish; flourish; wave; swing
Used for swinging or waving something, especially a weapon or stick, often with force or in a threatening manner.
彼は刀を打ち振って敵に向かった。
He brandished his sword and charged at the enemy.
子供が棒を打ち振りながら走り回っている。
The child is running around swinging a stick.