sleepover

[ sleep-oh-ver ]
/ ˈslipˌoʊ vər /

noun

an instance of sleeping over, as at another person's house.
a person who sleeps over.

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Origin of sleepover

First recorded in 1970–75; noun use of verb phrase sleep over
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for sleepover

sleepover
/ (ˈsliːpˌəʊvə) /

noun

informal, mainly US an instance of spending the night at someone else's home
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with sleepover

sleep over

Spend the night as a guest in another's home, as in Karen's friend Wilma is going to sleep over tonight. [Second half of 1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.