graniteware

noun

1. a kind of ironware with a gray, stonelike enamel.
2. pottery with a speckled appearance like that of granite.
3. a semivitreous white pottery somewhat harder than earthenware.

noun

1. iron vessels coated with enamel of a granite-like appearance
2. a type of very durable white semivitreous pottery
3. a type of pottery with a speckled glaze