A term of endearment for one who is a cousin. Does not need to be of blood relation, but some one who has a cousin like relationship with another person. It is generally used for a first cousin situation. Not necessarily used in context for "gang banger" terminology but can be.
"Danni, you are my cuzzo, I absolutely love you!"
"Bridget and Danni are cuzzos because their Bigs are slashes"
basically the same as calling your boy 'holmes', 'cuz', 'dog', etc.... but when it's used, it tends to be more personal...like you are giving the status of 'cousin' to someone who's not related to you...only by the street or a hustle
Cuzzo's slick. We did some shit back in the day. Don't worry about cuzzo.