1. Hist. A law requiring that all fires be extinguished at a certain time in the evening, usu. announced by the ringing of a bell.
2. A regulation that forbids people (or certain classes of them, such as minors) from being outdoors or in vehicles during specified hours. [Cases: Infants 13. C.J.S. Infants §§ 5, 92–93, 95–98.]