An Italian/Sicilan sworn by the Code of Honor (Omerta) into La Cosa Nostra.
by Anonymous March 30, 2003
When someone thinks they are special they call themselves a mobster, they are more than likely a little p00f, its not the 1950's any fucking more
'ooo im a mobster i am mega hard and coooooo-el' <--- sarcasm there
by Dan Rodgers November 20, 2004
A fat line of sniffable powder substance, most likely cocaine.
Yo B hook it up with a mobster.
by jrs-one May 28, 2005
Mind control device introduced into MySpace to induce thousands of normally rational people into sending friend requests to hundreds of total strangers.
Add me to your mob in mobsters!
by Wayne the Brain July 19, 2008