Definitions of curfew
when people (either of a particular group, or everyone) must stay at home between particular times, especially at night and during times of war or political unrest
Clairton council is considering identification badges for youth as part of a program to extend the curfew during the summer months.
when something is not allowed to happen between particular times
The town of East Hampton has established a curfew for daily take-offs and landings from 11pm to 8am for aircraft using its municipal airport.