tour

(noun) a journey or route all the way around a particular place or area. Synonyms: circuit. Examples: "They took an extended tour of europe." "We took a quick circuit of the park." "A ten-day coach circuit of the island."

(noun) a time for working (after which you will be relieved by someone else). Synonyms: go, spell, turn. Examples: "It's my go." "A spell of work."

(noun) 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. Examples: "We toured the provence this summer."