Noun

(en-noun)

A construction material made from expanded polystyrene.

* {{quote-news, year=2009, date=July 3, author=Lisa A. Phillips, title=A Jazz Voice Finds a Mellower Range, work=New York Times citation

, passage=The aesthetic of the house is prim and country, with white beadboard knee walls around the first floor and pale flowered wallpaper in the Shaker-style kitchen. }}