- 1a monumental structure with a square or triangular base and sloping sides that meet in a point at the top, especially one built of stone as a royal tomb in ancient Egypt.
Pyramids were built as tombs for Egyptian pharaohs from the 3rd dynasty (circa 2649 bc) until circa 1640 bc. Monuments of similar shape are associated with the Maya and Aztec civilizations of circa 1200 bc- ad 750, and, like those in Egypt, were part of large ritual complexes
- short for pyramid scheme.
verb[with object] chiefly North American
late Middle English (in the geometric sense): via Latin from Greek puramis, puramid-, of unknown ultimate origin