Pronunciation: (kyOO'pu-lu), [key]
a. a light structure on a dome or roof, serving as a belfry, lantern, or belvedere.
b. a dome, esp. one covering a circular or polygonal area.
2. any of various domelike structures.
3. Metall.a vertical furnace for melting iron to be cast.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.