cir·cuit 
/ˈsɚkət/ noun
plural cir·cuits /ˈsɚkət/ noun [count] 1 : a series of performances, sports events, lectures, etc., that are held or done at many different places — usually singular ▪ She will be on a lecture circuit [=she will be traveling from place to place giving lectures] promoting her new book. ▪ He is one of the most popular drivers on the (racing) circuit. ▪ the women's tennis circuit 2 : a path or trip around something
▪ It takes a year for the Earth to make one circuit around the sun. — often + of ▪ She made a circuit of the museum. 3 : the complete path that an electric current travels along
▪ electric/electronic circuits ▪ a 120-volt circuit — see also closed-circuit, integrated circuit, printed circuit, short circuit 4 US, law a or Circuit : a legal district that is established within a state or within the federal judicial system
▪ She was appointed chief judge for the circuit. ▪ The case will be heard by a court in the Third Circuit.
b Circuit : a court of appeals for a particular circuit in the federal judicial system
▪ The Second Circuit ruled today against the plaintiff.
▪ It takes a year for the Earth to make one circuit around the sun. — often + of ▪ She made a circuit of the museum.
▪ electric/electronic circuits ▪ a 120-volt circuit — see also closed-circuit, integrated circuit, printed circuit, short circuit
▪ She was appointed chief judge for the circuit. ▪ The case will be heard by a court in the Third Circuit.
b Circuit : a court of appeals for a particular circuit in the federal judicial system
▪ The Second Circuit ruled today against the plaintiff.
