9 letters · 15 points in Scrabble
noun a college or university building containing living quarters for students
noun a large sleeping room containing several beds
originFrom Middle English dormitory, dormytory, dormytorye, borrowed from Latin dormītōrium (“a sleeping-room”), from dormiō (“to sleep”). Doublet of dormitorium and dorter.
Etymology from Wiktionary, CC BY-SA 3.0