DuckCorp Dico

Found 2 definitions

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Si \Si\ [It.] (Mus.)
      A syllable applied, in solmization, to the note B; more
      recently, to the seventh tone of any major diatonic scale. It
      was added to Guido's scale by Le Maire about the end of the
      17th century.
      [1913 Webster]
   
                   
                 

2.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Maffioso \Maf`fi*o"so\, Mafioso \Ma`fi*o"so\, n.; pl. -si.
      [It. maffioso.]
      A member of the mafia.
      [Webster 1913 Suppl.]