beadboard
nounEtymology From bead + board.
1
Usually Wooden boards with a bead or ridge running their length used for paneling walls or ceilings.
- 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.2009 July 3, Lisa A. Phillips, “A Jazz Voice Finds a Mellower Range”, in New York Times:
2
Usually A construction material made from "beads" of expanded polystyrene compressed together.