a three-dimensional geometric figure with a square base and four triangular sides that connect at one point; a pyramid with a square base
The Great Pyramid of Giza is an example of a square pyramid.
A square pyramid is placed on the top of the tower, and the whole is suitably coloured.
A stick of timber is in the shape of the frustum of a square pyramid, the lower base being 22 in.
As this number is the square of 70, we can lay out the balls in a square, and can form a square pyramid with them.
At the end of the building is the royal tomb, consisting of a square pyramid and containing the body of Imandes.