What is the meaning of tour?

noun

• A journey or route all the way around a particular place or area.
  • usage: "they took an extended tour of Europe"; "we took a quick circuit of the park"; "a ten-day coach circuit of the island"
  • synonyms: circuit
• A time for working (after which you will be relieved by someone else. )
  • usage: "it's my go"; "a spell of work"
  • synonyms: go, spell, turn
• A period of time spent in military service.
  • synonyms: enlistment, hitch, term of enlistment, tour of duty, duty tour

verb

• Make a tour of a certain place.
  • usage: "We toured the Provence this summer"