brandish

The robber entered the bank and started to brandish a pistol at the customers.

(Chinese) 劫匪进入银行，开始向顾客挥舞手枪。

Supporters stood outside the stadium, brandishing flags and cheering for their team.

(Chinese) 支持者站在体育场外，挥舞着旗帜为他们的球队欢呼。