The Collaborative International Dictionary
Parascenium
Parascenium \Par`a*sce"ni*um\, n.; pl. Parascenia. [NL., fr. Gr. ?; para` beside + ? stage.] (Greek & Rom. Antiq.) One of two apartments adjoining the stage, probably used as robing rooms.
Wiktionary
parascenium
n. (context historical English) One of two apartments adjoining the ancient stage, probably used as dressing rooms.