contrabasso

from The Collaborative International Dictionary of English v.0.48

Contrabasso \Con`tra*bas"so\, n. [It. contrabasso.] (Mus.)
   The largest kind of bass viol. See {Violone}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Basso \Bas"so\, n. [It., fr. LL. bassus. See {Base}, a.] (Mus.)
      (a) The bass or lowest part; as, to sing basso.
      (b) One who sings the lowest part.
      (c) The double bass, or {contrabasso}.
          [1913 Webster]

   {Basso continuo}. [It., bass continued.] (Mus.) A bass part
      written out continuously, while the other parts of the
      harmony are indicated by figures attached to the bass;
      continued bass.
      [1913 Webster]