cupola

English Thesaurus

1. a roof in the form of a dome (noun.artifact)

hypernym	:	dome,
definition	:	a hemispherical roof (noun.artifact)

2. a vertical cylindrical furnace for melting iron for casting (noun.artifact)

hypernym	:	furnace,
definition	:	an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc. (noun.artifact)