(I need to post here more often...)
These are some of the things I've come across in reading about the Mafia in books. I've only read a couple, but these are two of the ones that actually come with some sort of glossary in the front.
This is mostly for fanfic writers still in the Reborn fandom. The two books below pertain to AMERICAN MAFIA for the most part, which, of course, makes most of the terms useless. But I do hope that they help anyway in making dialogue sound more authentic.
One last book that you can consult is recently popular "Gomorrah" by Roberto Saviano. His book is directly about the modern Italian mafia, and therefore will be of much more use to you.
Gomorrah, however, does not have an easy glossary. I might go through it later to pick out some of the more relevant topics to discuss so people can get a feel for what the mafia does on a regular basis - what Tsuna would consider "daily business".
But for now, please make use:
( From Ernest Volkman's 'Gangbusters' )( From Philip Carlo's 'The Ice Man' )Hope these were of help. As a side note, I also did
this post on Italian Mafia Commandments a while back. Take a look if you're interested.