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• (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

  domain topic	securities marketstock exchangestock market
  hypernym	speculationventure

• a polyhedron having a polygonal base and triangular sides with a common vertex

  derivation	pyramidalpyramidical
  hypernym	polyhedron
  hyponym	regular pyramidsquare pyramid

• increase rapidly and progressively step by step on a broad base

  hypernym

  increase

• arrange or build up as if on the base of a pyramid

  derivation	Pyramid
  hypernym	arrangeset up

• enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts

  domain topic	investinginvestment
  hypernym	benefitgainprofit

• use or deal in (as of stock or commercial transaction) in a pyramid deal

  domain topic	crimecriminal offencecriminal offenselaw-breaking
  hypernym	dealselltrade