stay over

stay over

1. To spend the night at someone else's home or at some form of lodging. My son is staying over at his friend's house tonight. It's getting late, so why don't you both stay over in our spare room? Our flight's been cancelled, so we're going to have to stay over at a hotel.
2. By extension, to spend the night in someone's bed, with the implication of having sex with them. Are you sure you're ready for him to stay over? You've only been going out for a couple weeks.
See also: over, stay
Farlex Dictionary of Idioms.

stay over (somewhere)

to stay overnight in a dwelling other than one's own. Can I stay over at Jimmy's tonight? No, you can't stay over.
See also: over, stay
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

stay over

Remain overnight, as in We hadn't planned to stay over but the bad weather changed our plans. [Late 1800s]
See also: over, stay
The American Heritage® Dictionary of Idioms by Christine Ammer.

stay over

v.
To spend the night: The roads were icy, so we urged our guests to stay over. We stayed over in Denver and left the following morning.
See also: over, stay
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • stay the night
  • spend the night
  • spend the night with somebody/together
  • sleep over
  • empathize
  • empathize with
  • empathize with (someone or something)
  • ride on (one's) coattails
  • ride on coattails
  • ride on someone's/something's coat-tails