Wiktionary
a. Relating to activities or operations taking place after legal closing time. alt. Relating to activities or operations taking place after legal closing time.
WordNet
adj. after closing time especially a legally established closing time; "after-hours socializing"; "an after-hours club"
Usage examples of "after-hours".
Howe had not been close before Howe saved his life, but the former NSC aide was well known as an after-hours partyer, and the few times that Howe had lunch with him McIntyre had at least two drinks.
Renatta had transferred her after-hours affections from the DNA Cowboys altogether, first to Goshon Mass Goh after he had narrowly beaten Reave at the wandweking and then to, of all people, Clay Blaisdell.
Getting through to the government agency after-hours had been a morass of answering machines, people who were home but not on call, and people who were on call but not at home.
A few kids cluster by the potted plants, planning an after-hours dumpster dive.
Tannim had put in several after-hours sessions reinforcing the protections on Sam’s house.
He is also the only member of the Select Committee with after-hours personal access to John Dean.