Something eaten after a particularly intense meal/snack to get the flavor out of your mouth. A good palette cleanser tastes relatively subtle or bland.
Yeowch, these Altoids set my mouth on fire! I need me a good palette cleanser. Do we have any Fritos?
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".