cupola

cupola is defined in Webster's Unabridged Dictionary (1913) with 4 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.A small structure standing on the top of a dome; a lantern.
  2. 2.A furnace for melting iron or other metals in large quantity, -- used chiefly in foundries and steel works.
  3. 3.A revoling shot-proof turret for heavy ordnance.
  4. 4.(Anat.) The top of the spire of the cochlea of the ear.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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