Contraction of "pr0n" and the french word "poney" (pony).
Can be used as an adjective either to describe small horses having sexual intercourse, or something that seems cute but you find disturbing.
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".