noun
arras
AIR-us/ˈɛrəs/
A tapestry used as a wall hanging.
An embroidered arras hangs behind the carved chair in the old hall.
Etymology
Arras is the city where these pictured tapestries were made. The place of manufacture gave its name to the rich fabric hangings used to cover walls.
In context
Behind the arras hearing something stir, Whips out his rapier, cries, 'A rat, a rat!'