Easy as in curtains The term refers to the action of closing curtains, indicating the moment when lights are turned off or a place becomes dark. Clear All
2 Example Sentences Showcasing the Meaning of 'Lights Out'
In the detective novel, the protagonist discovered a hidden switch that triggered lights out in the secret room, revealing long-lost evidence.
The science experiment required complete darkness during lights out to observe the bioluminescent organisms reacting to different stimuli.
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