Kidderminster carpet
Concise Oxford English Dictionary © 2008 Oxford University Press:
Kidderminster carpet/ˈkɪdəmɪnstə/
▶noun a reversible carpet made of two cloths of different colours woven together.
– origin C17: named after Kidderminster in Worcestershire, a centre of carpet-making.
'Kidderminster carpet' also found in these Oxford entries:

