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sleep over
sleep over (with someone) (some place)
to spend the night sleeping at someone else's home. (Typically said by teenagers or younger children who spend the night with a friend.) Mom, can I sleep over with Tony? Can I sleep over at Tony's house?
sleep over
to stay the night in someone else's home If you don't want to drive home this late at night, you're welcome to sleep over.
Related vocabulary: stay oversleep 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]
sleep over
v. To spend the night as a guest in another's home: A friend from out of town slept over last night. You can sleep over on the couch if you're too tired to drive home.