Choose the correct idiom meaning “to wait for a long time”:

Correct answer: Cool one’s heels. “Cool one’s heels” means to wait, especially for a long time.

Background: It is often used when someone is kept waiting by another person.

• Cool one’s toes: “Cool one’s toes” is not an idiom.
• Cool one’s feet: “Cool one’s feet” is not an idiom.
• Cool one’s ankles: “Cool one’s ankles” is not an idiom.

Did you know? Example: “They left me to cool my heels outside his office.”

Memory trick: Heels = waiting.