Definitions
1.nounOne who walks about; a pedestrian; an itinerant.
2.noun(usually capitalized) One who accepts the philosophy of Aristotle or his school; an Aristotelian.
3.adjectiveTending to walk about.
4.adjectiveConstantly travelling; itinerant; nomadic.
5.adjective(usually capitalized) Having to do with Aristotle, his philosophy, or the school of thought which he founded -- from the practice of conducting philosophical conversations while taking a walk.