A word that takes the place of an item or product that is difficult to name. Derived from a famous store people could buy things that couldn't be found anywhere else.
"You know, the place that sells those things, thingos, whatchamacallit, ahhhh....dooverlackies"
"You want what? Well, you've got two chances, DOOVERLACKIES and none"
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".