Pronunciation: ( jō),[key] —n. 1. (sometimes l.c.)Informal.fellow; guy: the average Joe who works for a living. 2. Informal.a personification of a typical, often unprepossessing representative of an occupation, personality trait, state of being, etc., that is expressed, sometimes metonymically, as a mock surname: Joe Lunchbucket working hard at some factory and paying his taxes year after year; political con artists relying on the gullibility of Joe Schmo. 3. a male given name, form of Joseph.