/ Dictionary Meaning of twin room Find definitions for: twin' room' Pronunciation: [key] twin (def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. twinning twin-screw Related ContentDaily Word Quiz: opprobriumAnalogy of the Day: Today's AnalogySpelling Bee: Today's Spelling BeeKids' Word Quiz: preparatoryCrossword: Crossword Puzzle GuideFrequently Misspelled WordsFrequently Mispronounced WordsEasily Confused WordsWriting & Language