Source : Webster's Revised Unabridged Dictionary (1913)

Volta \Vol"ta\, n.; pl. {Volte}. [It. volta a turn, turning, a
   time. See {Volt} a tread.] (Mus.)
   A turning; a time; -- chiefly used in phrases signifying that
   the part is to be repeated one, two, or more times; as, una
   volta, once. Seconda volta, second time, points to certain
   modifications in the close of a repeated strain.

Source : WordNet®

Volta
     n : Italian physicist after whom the volt is named; studied
         electric currents and invented the voltaic pile
         (1745-1827) [syn: {Count Alessandro Volta}, {Conte
         Alessandro Volta}, {Conte Alessandro Giuseppe Antonio
         Anastasio Volta}]