ob·e·lisk 
(ŏbə-lĭsk)
(ŏbə-lĭsk)n.
1. A tall, four-sided shaft of stone, usually tapered and monolithic, that rises to a pointed pyramidal top.
2. The dagger sign (†), used especially as a reference mark. Also called dagger, obelus.
[Latin obeliscus, from Greek obeliskos, diminutive of obelos, a spit, obelisk.]
ob′e·liscal (-lĭskəl) adj.
ob′e·liskoid′ (-koid′) adj.
obeliskred granite obelisk at
Luxor Temple
Luxor, Egypt