- Be next to and joined with (a building, room, or piece of land): the dining room adjoins a small libraryMore example sentences
- I walked through the briefing room, which adjoined his office.
- He presumed they exited through the conference room which adjoined his office and went down the stairwell.
- An archway leads through to the interconnecting conservatory which adjoins the dining room and has rear garden access.
Middle English: from Old French ajoindre, from Latin adjungere, from ad- 'to' + jungere 'to join'.