砥柱 dǐzhù Mount Dizhu Origin Definitions Defs Strokes Stroke Words Sentences Sents 砥 dǐ baffle pier (bound form) a baffle pier or obstruction in a stream used to break the force of the water; also describes a flat surface like a whetstone柱 zhù noun pillar pillar; column; post; upright; an upright structural support in a building