lights-out

Thesaurus

Noun	1.	lights-out - a prescribed bedtimenight, nighttime, dark - the time after sunset and before sunrise while it is dark outsidebedtime - the time you go to bed
	2.	lights-out - (military) signal to turn the lights outtapsbugle call - a signal broadcast by the sound of a buglearmed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"