after hoursafter the time when a business, especially a bar, is supposed to close
[TahlilGaran] Dictionary of Contemporary English ▲
after hours adv. or adj. phr. Not during the regular, correct, or usual time; going on or open after the usual hours.
The store was cleaned and swept out after hours. The children had a secret after hours party when they were supposed to be in bed. [TahlilGaran] English Idioms Dictionary ▲