also: ホームパーティ
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
今週末、友達の家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くから、みんな来て
I'm throwing a house party, so everyone come over!