Cuzzie Bro Share definition Flag A person who is your best mate/friend. This word is mostly used by New Zealand Maori. Guy: Who's he? Maori: He's my cuzzie bro Guy: Che! Cuzzie Bro by Sabre Z September 20, 2004 0 0 Get merch Get the Cuzzie Bro mug. Buy Now — $32.95 See more merch