tympani

tympani
    n 1: a large hemispherical brass or copper percussion instrument
         with a drumhead that can be tuned by adjusting the tension
         on it [syn: {kettle}, {kettledrum}, {tympanum}, {tympani},
         {timpani}]
    

Kettledrum \Ket"tle*drum`\ (-dr[u^]m`), n.
   1. (Mus.) A drum made of thin copper in the form of a
      hemispherical kettle, with parchment stretched over the
      mouth of it.
      [1913 Webster]

   Note: Kettledrums, in pairs, were formerly used in martial
         music for cavalry, but are now chiefly confined to
         orchestras, where they are called {tympani}.
         [1913 Webster]

   2. An informal social party at which a light collation is
      offered, held in the afternoon or early evening. Cf.
      {Drum}, n., 4 and 5.
      [1913 Webster]
    

Tympano \Tym"pa*no\, n.; pl. {Tympani}. [It. timpano. See
   {Tympanum}.] (Mus.)
   A kettledrum; -- chiefly used in the plural to denote the
   kettledrums of an orchestra. See {Kettledrum}. [Written also
   {timpano}.]
   [1913 Webster]