IPA: /ˈsliːpˌoʊvər/
KK: /ˈsliːpˌoʊvər/
A gathering where friends stay overnight at someone's home, usually for fun and activities.
I had a sleepover with my friends last weekend, and we watched movies all night.
Sleepover → It is formed from "sleep" (from Old English *slēpan*, meaning to rest or be in a state of sleep) and "over" (meaning above or across). The word "sleepover" refers to the act of sleeping at a place other than one's own home, typically at a friend's house.
Think of resting ('sleep') at a place 'across' ('over') from your own home — that's what a sleepover means.