An establishment with karaoke equipment where customers go to sing; can be private-room 'karaoke box' style or bar-style.
週末は友だちとカラオケ屋で歌ってストレス発散した。
I went to a karaoke place with friends at the weekend and sang to relieve stress.
会社の歓迎会はカラオケ屋の個室を予約した。
We reserved a private room at a karaoke venue for the company's welcome party.
あの地域には夜遅くまで開いているカラオケ屋が多い。
There are many karaoke places in that area that stay open until late at night.