[ˈpɪrəmɪd]
Definition:
1. A polyhedron having a polygonal base and triangular sides with a common vertex.
2. A large building with a square or triangular base and sloping sides that meet in a point at the top. The ancient Egyptians built stone pyramids as places to bury their kings and queens.
3. A solid shape with a square or triangular base and sloping sides that meet in a point at the top.