scrim (en)

(noun) a durable plain-woven usually cotton fabric for use in clothing, curtains, building, and industry / (noun) a theater drop that appears opaque when a scene in front is lighted and transparent or translucent when a scene in back is lighted / (noun) something likened to a theater scrim

—p.51 Letters (2015): The Story of a New Name (48) missing author 5 months, 3 weeks ago