When you think pyramid, you're probably picturing the famous pyramids of Egypt — the enormous triangular monuments where pharaohs were buried thousands of years ago.

Besides being a polyhedron shape, pyramid can also represent shady financial dealings. If you've got a pyramid scheme — and if you do, you may be reading this from your jail cell — you have people buy into your "investment" and then they recruit others to buy in, too. The early investors rise in the pyramid and are then paid "returns" out of the funds paid in by the new investors they've recruited (the pyramid base), and on and on.

Definitions of pyramid
  1. noun
    a polyhedron having a polygonal base and triangular sides with a common vertex
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    type of:
    a solid figure bounded by plane polygons or faces
  2. verb
    arrange or build up as if on the base of a pyramid
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    type of:
    arrange, set up
    put into a proper or systematic order
  3. verb
    increase rapidly and progressively step by step on a broad base
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    type of:
    become bigger or greater in amount
  4. noun
    (stock market) a series of transactions in which the speculator increases his holdings by using the rising market value of those holdings as margin for further purchases
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    type of:
    speculation, venture
    an investment that is very risky but could yield great profits
  5. verb
    use or deal in (as of stock or commercial transaction) in a pyramid deal
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    type of:
    deal, sell, trade
    do business; offer for sale as for one's livelihood
  6. verb
    enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts
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    type of:
    benefit, gain, profit
    derive a benefit from
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