Living Room
Sitting Room
noun
A room that comes alive in intervals is your living room, or sitting room. You don't spend all your time in there, so it can only be alive sometimes.
Note that 居間 is a little old-fashioned. These days, the more common word for a living room is リビングルーム.
The readings for this word are both kun'yomi readings. You've learned both of these readings by now so you should be able to read this on your own.
「今、どこ？」「え、今、居間だよ」
"Where are you?" "I'm in the living room now."
父は居間でテレビを観ています。
Dad is watching TV in the living room.
居間に靴下が脱ぎっぱなしになってるよ。
You took off your socks in the living room and left them there.
「ごはんできたよー！」と言っても、だれも居間から動こうとしなかった。
Even when I said, "Dinner is ready!" nobody wanted to move from the sitting room.