Diner's couch and so the room itself (10)
I believe the answer is:
triclinium
(Another definition for triclinium that I've seen is " Ancient couch".)
I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.