Source : Webster's Revised Unabridged Dictionary (1913)

Lazzaroni \Laz`za*ro"ni\ (?; It. ?), n. pl. [It. lazzarone, pl.
   lazzaroni.]
   The homeless idlers of Naples who live by chance work or
   begging; -- so called from the Hospital of St. Lazarus, which
   serves as their refuge. [Written also, but improperly,
   {lazaroni}.]