Curfew

[Britney]

The ringing of an evening bell, originally a signal to the
inhabitants to cover fires, extinguish lights, and retire to rest, --
instituted by William the Conqueror; also, the bell itself.

[Dave Paprocki]

Similar to a booty call, but a more [tactful] euphemism in a [committed relationship]. When the maximum allowed time has passed without having sex, either by appointment or by arbitrary desires. Should be looked forward to in a [healthy relationship].

[Dianne]

a [defined] time or [restriction].
not [allowed] at a certain time.

[Vania]

[A time] that my parents expect me home on Friday and [Saturday] [nights].

[Hina Muqadas]

[curfew]; a frustrating limit or [restriction] imposed upon children by [parental units] or other authoritative figures of with equal or great power.

[Renato]

A stupid time [restriction] that keeps kids and [crazy people] off [the street].

[Merna]

A regulation requiring people to remain indoors between specified hours, typically at night.

[Hina Muqadas]

[On lockdown] / [punishment]

[Ernesto]

a rule that everyone must stay at home between particular times, usually at night, especially during a war or a period of political trouble: