Cafeteria
Dining Hall, Diner
noun
An eating hall is a big room in which you eat. What big rooms do you eat in? How about a cafeteria, a dining hall, or a diner?
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
この食堂の店主は、古くさい男で、男は家庭のことに干渉すべきではないと主ちょうするんです。
The owner of this diner is so old fashioned that he insists that men shouldn't interfere in domestic matters.
さっきトーフグ食堂に行ったんだけど、無名の歌手が無料のワンマンライブをしてたよ。
When I went to the Tofugu dining hall a while ago, there was free live music from some singer I didn't know.
お昼ごはん、食堂で食べない？もしよければ、私二限目のクラスが無いから、席取っておけるよ。
Do you want to eat lunch in the cafeteria? If so, I don’t have a second period class, so I could find some seats for us.