I. ˈtu̇r, 1 is also ˈtau̇(-ə)r noun
Etymology: Middle English, from Anglo-French tur, tourn turning, circuit, journey — more at turn
Date: 14th century
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 tour 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 tour of the history of philosophy
b. : a brief turn : round
c. : a series of professional tournaments (as in golf or tennis)
II. verb
Date: 1708
intransitive verb
: to make a tour
transitive verb
1. : to make a tour of
2. : to present (as a theatrical production) on a tour