noun
1. also crown plate : the plate that forms the top of the furnace or firebox of an internally fired steam boiler
2. : one of the upper steel plates in an oil still
noun
1. also crown plate : the plate that forms the top of the furnace or firebox of an internally fired steam boiler
2. : one of the upper steel plates in an oil still
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012