pot clay

pot clay

[′pät ‚klā]
(materials)
Refractory clay used to make the pots in which glass is produced.
References in periodicals archive ?
Fox Valley Pottery will be hosting summer camps for kids, adding pinch pot clay classes and more.
Each skull is made from Cornish pot clay and takes around two days to produce.
By the middle of the 19th century, Stourbridge was producing around 12,000 tons of pot clay a year.