1. Used to describe a person who is a calm, collected, smart, and strong bad ass like Zachary Quinto's portrayal of Spock in "Star Trek: Into Darkness."
2. Used to describe degrees of coolness in geek culture.
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".