apodyterium
noun
ap·o·dy·te·ri·um
ˌapəˌdīˈtirēəm
plural apodyteria
-rēə
: a dressing room in an ancient Greek or Roman bath or palaestra
Word History
Etymology
Latin, from Greek apodytērion, from apodyein to strip off, from apo- + dyein to dive in, put on (clothes)