Waiting Room, Meeting Place
noun, verbal noun
The place you wait to join other people is a waiting room or a meeting place.
まちあい
The readings for this word are both kun'yomi readings, but it's like the hiragana that normally sticks out is stuffed in. 待ち → 待, 合い → 合 and is pronounced the same too. I know it's confusing, but once you get it down you'll never forget!
待合で待ってるね！
I'll be waiting for you in the waiting area.
病院の待合で高校の時の友人にバッタリ会いました。
I bumped into a friend from high school unexpectedly in the hospital waiting area.
合図をしたら、待合でスクワットを始めてください。
Start squatting in the meeting place on my signal.