dormitorium

noun3

1. •
   (rare) A dormitory.

   • If I raid your dormitorium don’t try to remain aloof / I might snatch you up screamin’ through the window all naked / And do it to you up on the roof, don't mess with the zomby woof — 1973
2. •
   (rare) An ancient Roman dormitory.

   • The several apartments, I, M, are the cubicula or dormitoria, and those used by the family, termed exedrae and oeci. […] G […] and H are cubicula, the smaller of which are the dormitoria. — 1881
3. •
   (rare) A monastic dormitory.

   • Barnab, find them accommodations in the dormitoriums and arrange for their ablutions. […] You will find a group lavatorium and water closet at the far end of the dormitorium. — 2012