Like an empire, except built by an enterprising Jew and is largely based around money. A Jewpire could be any established market system created for the purpose of accumulating wealth, a financial empire bent solely on profit and acquiring those delicious shekels, as well as controlling others.

Jews are actually all creatures called "Jewpires". These creatures are very similar to vampires, evil undead monsters. But it's not your blood you must protect...it's your wallet. These creatures will suck your bank account dry.