The back part of the human foot below the ankle.

“I have a blister on my left heel from these new shoes.”

The raised part on the bottom of a shoe that supports the back of the foot.

“She broke the heel of her boot while walking on the cobblestones.”

To follow closely at the heels of someone, often used as a command to a dog.

“The trainer told the dog to heel, and it immediately stopped pulling.”