What is the meaning of 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.

A walking frame or baby walker.

A shoe designed for comfortable walking. (Can we add an example for this sense?)

A zombie.

A male escort who accompanies a woman to an event.

A gressorial bird.(Can we add an example for this sense?)

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.

A prostitute, streetwalker.

Alternative form of waulker

a prostitute

tucker

Alternative form of walkere (traveller)

Alternative form of walkere (fuller)

Source: wiktionary.org