
1) Affair 2) All-night party 3) Certain party 4) Function 5) Occasion 6) Pajama party 7) Social function 8) Social occasion 9) Teen party
Found on
https://www.crosswordclues.com/clue/sleepover

A sleepover, also known as a pajama party or a slumber party, is a party most commonly held by children or teenagers, where a guest or guests are invited to stay overnight at the home of a friend, sometimes to celebrate birthdays or other special events. A lock-in is a similar event held in a setting other than a private home, such as a school or ...
Found on
http://en.wikipedia.org/wiki/Sleepover
noun an occasion of spending a night away from home or having a guest spend the night in your home (especially as a party for children)
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.