wallpaper
n. C / Un. thick paper with patterns on it that you stick to the walls of a room to decorate them. In computing, it is the background image you see on your computer or phone screen.
n. decorative paper applied in strips to the interior walls of a building. In a digital context, refers to the background image or pattern displayed on a graphical user interface.
I chose a floral wallpaper for the bedroom.
The living room looks much brighter now that we have replaced the dark wallpaper with a light cream pattern.
While traditional interior design focuses on physical wallpaper textures, modern digital aesthetics often involve high-resolution wallpaper that shifts dynamically based on the time of day or system activity.
From wall + paper.
Uncountable when referring to the material in general; countable when referring to a specific design or digital image file.