lights-outnoun [ U ]
uk/ˌlaɪtsˈaʊt/us/ˌlaɪtsˈaʊt/(at a school where children live or in the army) the time in the evening when the lights are switched off in the room where people sleep:
No talking after lights-out!
Thesaurus: synonyms and related words
Animal physiology: sleep & sleeping
- beauty
- bed
- bunk
- bye-byes
- catnap
- conk
- dead
- delayed sleep phase pattern
- disco nap
- kip
- sleep over
- sleeper
- sleepyhead
- slept
- sound
- soundly
- tuck
- tuck sb in
- turn
- turn in
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You can also find related words, phrases, and synonyms in the topics:
Days & times of day