mess hall
mess room

He wasn't with the other kids in the mess hall.

We'll be in the mess hall if you change your mind.

I put off going into the mess hall or whatever it was.

He raised a hand and went off down the mess hall.

Their only break comes when they go to eat at a mess hall in another building.

"And would that have anything to do with what happened in the mess hall?"

One company would fit into the mess hall at a time.

He and security will take you to the officers' mess hall.

"And you believe the mess hall is the place to do it?"

Then he led his security officers out of the mess hall.