An Italian American, and only an Italian America, who has ties with the mafia or any goodfellas. He is in no way a gangster or a mobster himself. He sits down eating only pasta wearing vinyl suits and massive jewelry
Goomba is the phonetic spelling of the term "cumpà", which is the way people from Southern Italy used to pronounce the word "compare", that is "godfather". From the original sense it was gradually extended to mean a friend, a partner, etc.