1. One who mongs dongs.
2. A person who is known to be an annoyance to a particular group of friends, who secretly dislike said person.
3. Less used insult similiar to "dick-head."
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".