A colloquialism for the term "Bitches". Used in conjunction with the added "Z" vernacular, much like the added "nit" terms as well. See also "Shiznit" or "Hizoes".
This word is a shizzolation of the word 'Biznatch' which in turn is a sheezyation of the word 'Biatch' (Itself the nizzmotronic version of 'Bitch') or 'Business' depending on who you ask.
Look mum, I just got the newedition of Gangstaz Weekly with LL Cool Frood on the cover! It's da biznatchmium!