Waiting Room
noun
A room where you join other people to wait. This is a waiting room.
Remember how you learned 待合 already? Well throw the on'yomi for 室 on the end of that and you have your reading!
今、歯医者の待合室にいます。
I'm in the dentist's waiting room now.
空港には、団体で旅行するグループのための待合室があります。
There are waiting rooms for tourist groups in airports.
数日前、病院の待合室で経済についての本を読んだんだけど、結構良かったよ。
I read an economics book the other day in the hospital waiting room and it was pretty interesting.