obelisk

A tall, four-sided shaft of stone, usually tapered and monolithic, that rises to a pointed pyramidal top.

The dagger sign (†), used especially as a reference mark.

A tapering shaft of rectangular plan, generally finished with a pyramidal apex.

In printing and writing, a sign resembling a small dagger (), and hence also called a dagger.

An upright, four-sided pillar, gradually tapering as it rises, and terminating in a pyramid called pyramidion. It is ordinarily monolithic. Egyptian obelisks are commonly covered with hieroglyphic writing from top to bottom.