stone pillar, typically having a square or rectangular cross section, set up as a monument or landmark 方尖碑;(用作里程碑的)方尖塔 ■a mountain, tree, or other natural object of similar shape 方尖形的山(或树等自然物)
another term for obelus 同 obelus
语源
mid 16th cent.: via Latin from Greek obeliskos, diminutive of obelos 'pointed pillar'