coved ceiling

from The Collaborative International Dictionary of English v.0.48
Cove \Cove\, v. t. [imp. & p. p. {Coved} (k?vd); p. pr. & vb. n.
   {Coving}.] (Arch.)
   To arch over; to build in a hollow concave form; to make in
   the form of a cove.
   [1913 Webster]

         The mosques and other buildings of the Arabians are
         rounded into domes and coved roofs.      --H.
                                                  Swinburne.
   [1913 Webster]

   {Coved ceiling}, a ceiling, the part of which next the wail
      is constructed in a cove.

   {Coved vault}, a vault composed of four coves meeting in a
      central point, and therefore the reverse of a groined
      vault.
      [1913 Webster]
    

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