ホームパーティー

noun

house party; home party

A casual social gathering held at someone's home. Often used for parties with friends, sometimes including overnight stays. Wasei-eigo: derived from English 'home party'.

wasei-eigo (Japanese-coined English), from home party

• 今こん週しゅう末まつ、友とも達だちの家いえでホームパーティーがある。

  There's a house party at my friend's place this weekend.

• ホームパーティーを開ひらくから、みんな来きてね。

  I'm throwing a house party, so everyone come over!