A room in which types are set and made ready for printing.(noun)
The Century Dictionary (Public Domain)
Use "composing-room" in a sentence
"The lone man in charge of the Copy desk, just returned from a bitter argument with the composing-room foreman, watched him sourly as he passed, and grimly sharpened a blue pencil."
"And the type-setter comes out of the composing-room and warns them: "Gentlemen, we still don't have a leader for tomorrow's issue"."
"Pamela, and found a job in the composing-room of the Evening News."