D defs.my
Entry 5 senses Webster, 1913

Cupola

/(k?"p?-l?)/ · Cu·po·la · IPA /ˈkjuːpələ/
01 n. A roof having a rounded form, hemispherical or nearly so; also, a ceiling having the same form. When on a large scale it is usually called dome.
pl. Cupolas ((-l�z))
  1. 1.
    A roof having a rounded form, hemispherical or nearly so; also, a ceiling having the same form. When on a large scale it is usually called dome.(Arch.)
  2. 2.
    A small structure standing on the top of a dome; a lantern.
  3. 3.
    A furnace for melting iron or other metals in large quantity, -- used chiefly in foundries and steel works.
  4. 4.
    A revolving shot-proof turret for heavy ordnance.
  5. 5.
    The top of the spire of the cochlea of the ear.(Anat.)