plural of pyramid of doom

plural of food pyramid

plural of earth pyramid

plural of ecological pyramid

plural of oblique pyramid

Synonym of old as the Pyramids

A tower made of people standing or kneeling on top of each other. / (circus) A formation of triangular shape with one or a small number of performers supporting a large number of other performers.

An illicit money-making investment scheme whereby early investors are paid primarily or wholly by later investors. Eventually all such schemes fail to the detriment of recent (later) investors.

(geometry) A three-dimensional geometric figure with a square base and four triangular sides that connect at one point. An example is the Great Pyramid of Giza.

A three-dimensional figure with four triangular bases.