Learn how to say Obelisk correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word obelisk:
1a tapering stone pillar, typically having a square or rectangular cross section, set up as a monument or landmark.
a mountain, tree, or other natural object resembling an obelisk in shape.
2another term for obelus.
mid 16th century: via Latin from Greek obeliskos, diminutive of obelos ‘pointed pillar’