walker

The agent noun of to walk: a person who walks or a thing which walks, especially a pedestrian or a participant in a walking race.
(rare) One who walks (takes for a walk).
A walking frame or baby walker.
(in-plural, often) A shoe designed for comfortable walking.
A zombie.
A male escort who accompanies a woman to an event.
A gressorial bird.
A forester.
A kind of military robot or mecha with legs for locomotion.
A batsman or batswoman who directly walks off the field when out without waiting for the umpire's decision.
(Philippines) A prostitute, streetwalker.