Wordnet 3.0
ADJECTIVE (1)
1. 
 after closing time especially a legally established closing time; 
- Example: "after-hours socializing"- Example: "an after-hours club"
WordNet (r) 3.0 (2006):
after-hours
    adj 1: after closing time especially a legally established
           closing time; "after-hours socializing"; "an after-hours
           club"