Obelisk

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.

A mark of reference; -- called also dagger [/]. See Dagger, n., 2.

To mark or designate with an obelisk.

a stone pillar having a rectangular cross section tapering towards a pyramidal top

a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used