The Collaborative International Dictionary of English v.0.48:

Cupola \Cu"po*la\ (k?"p?-l?), n.; pl. Cupolas (-l?z). [It.
   cupola, LL. cupula, cuppula (cf. L. cupula little tub). fr.
   cupa, cuppa, cup; cf. L. cupa tub. So called on account of
   its resemblance to a cup turned over. See Cup, and cf.
   Cupule.]
   1. (Arch.) 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.
      [1913 Webster]

   2. A small structure standing on the top of a dome; a
      lantern.
      [1913 Webster]

   3. A furnace for melting iron or other metals in large
      quantity, -- used chiefly in foundries and steel works.
      [1913 Webster]

   4. A revolving shot-proof turret for heavy ordnance.
      [1913 Webster]

   5. (Anat.) The top of the spire of the cochlea of the ear.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dome \Dome\, n. [See Doom.]
   Decision; judgment; opinion; a court decision. [Obs.]
   --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dome \Dome\, n. [F. d[^o]me, It. duomo, fr. L. domus a house,
   domus Dei or Domini, house of the Lord, house of God; akin to
   Gr. ? house, ? to build, and E. timber. See Timber.]
   1. A building; a house; an edifice; -- used chiefly in
      poetry.
      [1913 Webster]

            Approach the dome, the social banquet share. --Pope.
      [1913 Webster]

   2. (Arch.) A cupola formed on a large scale.
      [1913 Webster]

   Note: "The Italians apply the term il duomo to the principal
         church of a city, and the Germans call every cathedral
         church Dom; and it is supposed that the word in its
         present English sense has crept into use from the
         circumstance of such buildings being frequently
         surmounted by a cupola." --Am. Cyc.
         [1913 Webster]

   3. Any erection resembling the dome or cupola of a building;
      as the upper part of a furnace, the vertical steam chamber
      on the top of a boiler, etc.
      [1913 Webster]

   4. (Crystallog.) A prism formed by planes parallel to a
      lateral axis which meet above in a horizontal edge, like
      the roof of a house; also, one of the planes of such a
      form.
      [1913 Webster]

   Note: If the plane is parallel to the longer diagonal
         (macrodiagonal) of the prism, it is called a macrodome;
         if parallel to the shorter (brachydiagonal), it is a
         brachydome; if parallel to the inclined diagonal in a
         monoclinic crystal, it is called a clinodome; if
         parallel to the orthodiagonal axis, an orthodome.
         --Dana.
         [1913 Webster]

WordNet (r) 3.0 (2006):

dome
    n 1: a concave shape whose distinguishing characteristic is that
         the concavity faces downward
    2: informal terms for a human head [syn: attic, bean,
       bonce, noodle, noggin, dome]
    3: a stadium that has a roof [syn: dome, domed stadium,
       covered stadium]
    4: a hemispherical roof

Moby Thesaurus II by Grady Ward, 1.0:

111 Moby Thesaurus words for "dome":
   antenna tower, apse, arcade, arcature, arch, arched roof, archway,
   barbican, bean, belfry, bell tower, bend, bend back, bonnet, bow,
   brow, camber, campanile, cap, ceil, ceilinged roof, coif, colossus,
   column, concameration, concha, conk, cork, cove, crook, crown,
   cupola, curl, curve, decurve, deflect, derrick, embow, fire tower,
   flex, geodesic dome, hat, head, headpiece, hood, hook, hump, hunch,
   igloo, incurvate, incurve, inflect, keystone, lantern, lighthouse,
   loop, martello, martello tower, mast, minaret, monument, noddle,
   noggin, noodle, obelisk, observation tower, ogive, pagoda, pate,
   pilaster, pillar, pinnacle, pole, poll, pylon, pyramid, recurve,
   reflect, reflex, retroflex, ridge, roof, roof in, round, sag,
   sconce, shaft, skewback, skyscraper, span, spire, standpipe,
   steeple, stopper, stupa, swag, sweep, television mast, tip, top,
   tope, tour, tower, turn, turret, vault, vaulting, voussoir,
   water tower, wind, windmill tower



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DOME
       Distributed Object Management Environment (ORB)