noun

1. a turn or shift of work; esp., a period of duty or military service at a single place
   in full tour of duty
2. a long trip, as for sightseeing
3. any trip, as for inspection; round; circuit; specif., a trip, as by a theatrical company or speaker, to give performances, lectures, etc. at a number of cities

Etymology: ME < MFr <OFr to(u)rn < tourner, to turn

intransitive verb

transitive verb

1. to take a tour through
2. to take (a play, theatrical company, etc.) on a tour