noun
Usage: usually capitalized H
: a cheap brittle fragile but very refractory crucible composed of the finest fireclay and sand and commonly used for a single heating
noun
Usage: usually capitalized H
: a cheap brittle fragile but very refractory crucible composed of the finest fireclay and sand and commonly used for a single heating
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012