[tour] n [ME, fr. MF, fr. OF tourn, tour lathe, circuit, turn--more at turn] (14c) 1 a: one's turn in an orderly schedule: shift b: a period during which an individual or unit is on a specific duty or at one place "a ~ of duty"
2. a: a journey for business, pleasure, or education often involving a series of stops and ending at the starting point; also: something resembling such a tour "a ~ of the history of philosophy" b: a brief turn: round c: a series of professional tournaments (as in golf or tennis)
[2]tour vi (1789): to make a tour ~ vt 1: to make a tour of
2: to present (as a theatrical production) on a tour