[u][b]Noun[/b][/u]
[i]Obelisk[/i] - a stone pillar, typically having a square or rectangular cross section and a pyramidal top, set up as a monument or landmark.

[u][b]Verb[/b][/u]
[i]Coruscate[/i] - (of light) flash or sparkle.

[u][b]Adjective[/b][/u]
[i]Facetious[/i] - treating serious issues with deliberately inappropriate humor; flippant.

[u][b]Your Choice[/b][/u]
[i]Rive[/i] [adj] - split or tear apart violently.