/ ˈwɔːlpeɪpə(r); NAmE / noun , verb
■ noun [ U ]
1.
thick paper, often with a pattern on it, used for covering the walls and ceiling of a room :
wallpaper paste
a roll of wallpaper
to hang wallpaper
2.
( computing ) the background pattern or picture that you choose to have on your computer screen
■ verb
(also paper ) [ vn , v ] to put wallpaper onto the walls of a room