Source : Webster's Revised Unabridged Dictionary (1913)

Virtuoso \Vir`tu*o"so\, n.; pl. {Virtuosos}; It. {Virtuosi}.
   [It. See {Virtuous}.]
   1. One devoted to virtu; one skilled in the fine arts, in
      antiquities, and the like; a collector or ardent admirer
      of curiosities, etc.

            Virtuoso the Italians call a man who loves the noble
            arts, and is a critic in them.        --Dryden.

   2. (Mus.) A performer on some instrument, as the violin or
      the piano, who excels in the technical part of his art; a
      brilliant concert player.