I. noun
1. : a ceramic body containing refined clay and a glassy frit
2. or soft-paste porcelain : a soft low-fired translucent ware with a soft-paste body produced in Europe from the 15th through the 18th century — compare hard paste
II. noun
1. : a fine-grained opaque Chinese ceramic ware related to true porcelain but having part of the kaolin replaced by pegmatite and usually being fired twice
2. : a lightweight soft opaque clay body (as of early Staffordshire)