lights-out

English Thesaurus

1. (military) signal to turn the lights out (noun.communication)

hypernym	:	bugle call,
definition	:	a signal broadcast by the sound of a bugle (noun.communication)

domain category	:	armed forces, armed services, military, military machine, war machine,
definition	:	the military forces of a nation (noun.group)

2. a prescribed bedtime (noun.time)

hypernym	:	bedtime,
definition	:	the time you go to bed (noun.time)

part meronym	:	dark, night, nighttime,
definition	:	the time after sunset and before sunrise while it is dark outside (noun.time)