1. A polyhedron having a polygonal base and triangular sides with a common vertex Noun
2. (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 Noun
3. A massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt Noun
4. Enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts Verb
5. Use or deal in (as of stock or commercial transaction) in a pyramid deal Verb
6. Arrange or build up as if on the base of a pyramid Verb
7. Increase rapidly and progressively step by step on a broad base Verb