dormitory
/ˈdɔːmɪtərɪ; -trɪ/
noun (pl) -ries
1.
a large room, esp at a school or institution, containing several beds
2.
(US) a building, esp at a college or camp, providing living and sleeping accommodation
3.
(modifier) (Brit) denoting or relating to an area from which most of the residents commute to work (esp in the phrase dormitory suburb)