Vault \Vault\ (v[add]lt; see Note, below), n. [OE. voute, OF.
   voute, volte, F. vo[^u]te, LL. volta, for voluta, volutio,
   fr. L. volvere, volutum, to roll, to turn about. See
   Voluble, and cf. Vault a leap, Volt a turn, Volute.]
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   1. (Arch.) An arched structure of masonry, forming a ceiling
      or canopy.
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            The long-drawn aisle and fretted vault. --Gray.
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   2. An arched apartment; especially, a subterranean room, used
      for storing articles, for a prison, for interment, or the
      like; a cell; a cellar. "Charnel vaults." --Milton.
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            The silent vaults of death.           --Sandys.
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            To banish rats that haunt our vault.  --Swift.
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   3. The canopy of heaven; the sky.
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            That heaven's vault should crack.     --Shak.
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   4. [F. volte, It. volta, originally, a turn, and the same
      word as volta an arch. See the Etymology above.] A leap or
      bound. Specifically:
      (a) (Man.) The bound or leap of a horse; a curvet.
      (b) A leap by aid of the hands, or of a pole, springboard,
          or the like.
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   Note: The l in this word was formerly often suppressed in
         pronunciation.
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   Barrel vault, Cradle vault, Cylindrical vault, or
   Wagon vault (Arch.), a kind of vault having two parallel
      abutments, and the same section or profile at all points.
      It may be rampant, as over a staircase (see Rampant
      vault, under Rampant), or curved in plan, as around the
      apse of a church.

   Coved vault. (Arch.) See under 1st Cove, v. t.

   Groined vault (Arch.), a vault having groins, that is, one
      in which different cylindrical surfaces intersect one
      another, as distinguished from a barrel, or wagon, vault.
      

   Rampant vault. (Arch.) See under Rampant.

   Ribbed vault (Arch.), a vault differing from others in
      having solid ribs which bear the weight of the vaulted
      surface. True Gothic vaults are of this character.

   Vault light, a partly glazed plate inserted in a pavement
      or ceiling to admit light to a vault below.
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Wagon \Wag"on\, n. [D. wagen. [root]136. See Wain.]
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   1. A wheeled carriage; a vehicle on four wheels, and usually
      drawn by horses; especially, one used for carrying freight
      or merchandise.
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   Note: In the United States, light wagons are used for the
         conveyance of persons and light commodities.
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   2. A freight car on a railway. [Eng.]
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   3. A chariot [Obs.] --Spenser.
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   4. (Astron.) The Dipper, or Charles's Wain.
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   Note: This word and its compounds are often written with two
         g's (waggon, waggonage, etc.), chiefly in England. The
         forms wagon, wagonage, etc., are, however,
         etymologically preferable, and in the United States are
         almost universally used.
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   Wagon boiler. See the Note under Boiler, 3.

   Wagon ceiling (Arch.), a semicircular, or wagon-headed,
      arch or ceiling; -- sometimes used also of a ceiling whose
      section is polygonal instead of semicircular.

   Wagon master, an officer or person in charge of one or more
      wagons, especially of those used for transporting freight,
      as the supplies of an army, and the like.

   Wagon shoe, a skid, or shoe, for retarding the motion of a
      wagon wheel; a drag.

   Wagon vault. (Arch.) See under 1st Vault.
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