A character moniker in the "BFM (Burnt Face Man) 10" YouTube episode that I came here to search the meaning of, just to find Mister David Firth must've coined the term apparently because there is no other definition for it.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".