crouch-ware

from The Century Dictionary.

• noun A kind of fine pottery made with an admixture of pipeclay in Staffordshire. It is well finished, and its paste is very dense. The earliest crouch-ware was of a greenish tint. Solon, The Old Eng. Potter, p. 154.
• noun A name given to the salt-glazed stoneware made at Burslem in Staffordshire from a very early time, this being the earliest ware of that description made in England.