お泊とまり会かい

noun

sleepover; slumber party

A casual gathering where friends stay overnight, typically at someone's home. Often used for children's parties.

• 今こん週しゅう末まつ、友とも達だちの家いえでお泊とまり会かいをする予よ定ていです。

  I'm planning to have a sleepover at my friend's house this weekend.

• 娘むすめは初はじめてのお泊とまり会かいにわくわくしている。

  My daughter is excited about her first slumber party.