A made up word used to trick stupid 6th graders.
There is not an "X" word but you can get them so pissed at you. It works best if you get alot of people in on it and act serious like it's a super bad word.
Bob: Hey Whitney have your parents told you the x word yet.
Whitney: No whats that ?
Bob:What ... hey guys Whitney doesn't know the x word.
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".