Cupola

cu·po·la

ˈkyo͞opələ/

noun

1. a small dome, especially a small dome on a drum on top of a larger dome, adorning a roof or ceiling.

   • a gun turret; a small domed hatch above a gun turret on some tanks.
   • a cylindrical furnace for refining metals, with openings at the bottom for blowing in air and originally with a dome leading to a chimney above.

     noun: cupola furnace; plural noun: cupola furnaces
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    Just a few from Belle Isle