Noun
1. an electrical device that provides a path for electrical current to flow
2. a journey or route all the way around a particular place or area;
"they took an extended tour of Europe""we took a quick circuit of the park""a ten-day coach circuit of the island"3. an established itinerary of venues or events that a particular group of people travel to;
"she's a familiar name on the club circuit""on the lecture circuit""the judge makes a circuit of the courts in his district""the international tennis circuit"4. (law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations); one of the twelve groups of states in the United States that is covered by a particular circuit court of appe
5. a racetrack for automobile races
6. movement once around a course;
"he drove an extra lap just for insurance"