tour

Etymology 1

From Old French tour, tourn, from the verb torner, tourner.

noun

1. A journey through a particular building, estate, country, etc.
   On our last holiday to Spain we took a tour of the wine-growing regions.
2. A guided visit to a particular place, or virtual place.
   On the company's website, you can take a virtual tour of the headquarters.
3. A journey through a given list of places, such as by an entertainer performing concerts.
   Metallica's tour of Europe
4. (sports, chiefly cricket and rugby) A trip taken to another country in which several matches are played.
5. (sports, cycling) A street and road race, frequently multiday.
6. (sports) A set of competitions which make up a championship.
7. (military) A tour of duty.
   Among those released were two Americans who had been held captive for more than three months: Alex Drueke, a former U.S. Army staff sergeant who served two tours in Iraq, according to his aunt, Dianna Shaw; […] 2022-09-21, Carly Olson, Dan Bilefsky, “Ten prisoners, including Americans, have been released as part of a Russia-Ukraine exchange, Saudi Arabia says.”, in The New York Times, →ISSN
8. (graph theory) A closed trail.
9. (obsolete) A going round; a circuit.
10. (obsolete) A turn; a revolution.
    the tours of the heavenly bodies
    It [blood] onward springs, and makes the wondrous tour 1712, Richard Blackmore, Creation
11. (snooker">snooker) A circuit of snooker">snooker tournaments

verb

1. (intransitive) To make a journey
   The Rolling Stones were still touring when they were in their seventies.
2. (transitive) To make a circuit of a place
   The circuses have been touring Europe for the last few weeks.

Etymology 2

Old French tor, French tour (“tower”)

noun

1. (dated) A tower.

Etymology 3

See toot.

verb

1. (obsolete) To toot a horn.