a course round a periphery

a racetrack

the act of going round such a course or a racetrack

a regular tour, e.g. by a judge, round an assigned area or territory

the route travelled

a group of church congregations with one pastor, e.g. in the Methodist Church

a complete path of an electric current

an array of electrical components connected so as to allow the passage of current

a two-way communication path between points, e.g. in a computer

an association or league of similar groups

a chain of theatres at which productions are presented successively

a regular series of sports competitions in which the same competitors take part, or the players themselves

a set of physical exercises to be performed one after the other