Spending time on activities closely related to what you should be doing, and possibly beneficial to that task, but not actually doing what you should be, and certainly not making any progress..
The article on gruyere still isn't written, I could metacrastinate about woven yoghurt all week
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".