wallpaper I. \ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷\noun : decorative paper used to cover the walls of a room < hid the plain white walls with hideous flowered wallpaper > II. transitive verb : to provide the walls of (as a room) with wallpaper intransitive verb : to put wallpaper on a wall