pyramid

An ancient massive construction with a square or rectangular base and four triangular sides meeting in an apex, such as those built as tombs in Egypt or as bases for temples in Mesoamerica.

A construction in the shape of a pyramid, usually with a square or rectangular base.

[T]he owners of Doddington Hall, in Lincolnshire, have brought the folly into the 21st century, by building a 30ft pyramid in the grounds of the Elizabethan manor.

A solid with triangular lateral faces and a polygonal (often square or rectangular) base.

Any structure or diagram with many members at the bottom and progressively fewer towards the top.

The company was organized as a pyramid, with a CEO in charge of four directors, each heading up a department.

They sit looking at the empty plate that had held a pyramid of sesame cakes. They have eaten them all.

A medullary pyramid, the medial-most bumps on the ventral side of the medulla oblongata

To build up or be arranged in the form of a pyramid.

The paint was stacked in neatly pyramided lots along the concrete floor.

Once there was an enormous jukebox; the then-Harlettes (her three-woman back-up vocalists/dancers/mimes) pyramided to drop a huge coin, and around the bend of the big record would spin the diva.

To combine (a series of genes) into a single genotype.

To employ, or take part in, a pyramid scheme.

To engage in pyramid trading.

Multiply this by the number of shares you traded, and add other positions if you pyramided.

To increase to or towards a peak.

A solitaire card game where the cards are arranged as a triangle (a "pyramid") and the object is to get the cards from the bottom to the top.