A walker is a person who walks, especially for exercise, transportation, or pleasure. Some people are dedicated walkers who take long walks every day to stay healthy or clear their minds. In cities, walkers might navigate crowded sidewalks on their way to school or work. In nature, walkers might explore forest trails or mountain paths, enjoying the scenery while getting exercise.

The word can also refer to a lightweight metal frame with four legs that helps people who have trouble walking move around safely. This kind of walker provides support and balance: someone recovering from an injury or an elderly person might use a walker to get around their house or neighborhood. The person grips handles at waist height and moves the walker forward a step at a time, creating a stable support system.

Sometimes parents use the word for a baby walker, a wheeled device that lets babies practice moving around before they can walk independently, though many doctors discourage its use because it can be dangerous.

The word also appears in phrases like sleepwalker (someone who walks while asleep) and tightrope walker (an acrobat who walks across a thin rope high in the air).