a journey round a circle or closed route
revolution, track, boundary
Cases of word usage
1) an article etc cut out of a newspaper; a device that disconnects a circuit (cut-out)
2) (a device with) a thin wire which melts and breaks the circuit when the electric current is too strong (fuse)
3) an amount which is (to be) carried; an amount of electric current carried by a circuit (load)
4) a very small electronic circuit as used in microchip (microcircuit)
5) a container; a place (usually in the wall) where one may connect an electrical appliance to the electrical circuit (receptacle)
6) of, taking place, each term; (of a disease) causing death; an end of a railway line, bus route etc; a place used by passenger in an airport; a point of connection in an electric circuit (terminal)