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Webster 1913 Edition

Noun.

A species of coarse potter’s ware, glazed and baked.

Stoneware pottery with a celadon glaze, from the Ming Dynasty. Smithsonian Institution, Washington D.C.

stoneware ‎(countable and uncountable, plural stonewares)

A type of pottery that is fired at a high temperature and is dense, opaque and nonporous.

type of pottery

German: Steinzeug n
Japanese: 炻器 ‎(せっき, sekki), せっ器 ‎(せっき, sekki)
Russian: гли́няная посу́да f ‎(glínjanaja posúda), керами́ческие изде́лия n pl ‎(keramíčeskije izdélija), кера́мика (ru) f ‎(kerámika)

“stoneware” in the Webster's New Collegiate Dictionary, Merriam-Webster, 1974 edition.