pyramid

n 1: a polyhedron having a polygonal base and triangular sides

with a common vertex

2: a massive memorial with a square base and four triangular

sides; built as royal tombs in ancient Egypt

v 1: enlarge one's holdings on an exchange on a continued rise by

using paper profits as margin to buy additional amounts

2: use or deal in (as of stock or commercial transaction) in a

pyramid deal

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

4: increase rapidly and progressively step by step on a broad

base