A foot is a unit of length equal to twelve inches, commonly used in the United States to measure height, distance, and room dimensions. When you hear that someone is six feet tall or that a room is ten feet wide, they're using this measurement.

The word also refers to the body part at the end of your leg that you stand and walk on. Your foot has toes, a heel, and an arch that helps support your weight and push off when you move. Humans walk on two feet, while dogs and cats walk on four feet, which we also call paws.

In poetry, a foot is a unit of rhythm made up of stressed and unstressed syllables. When you read a poem with a steady beat, you're hearing its metrical feet at work.

We use foot in many common phrases. The foot of the bed is the end where your feet go. If you foot the bill, you pay for something. When you put your foot down, you take a firm stand on an issue. And if you get off on the wrong foot with someone, your relationship starts badly.