cool your heels
冷静下来，耐心等待
口语·表示不耐烦地等待或被迫冷静
英文释义
to wait impatiently or do nothing while anticipating something
例句
I had to cool my heels in the waiting room for an hour before the doctor finally saw me.
典故来源
源自马匹奔跑后让它们停下来冷却蹄子，引申为让人等待、冷静下来。