砥whetstone; to polish; baffle (pier)Strokes10PinyindǐParts石stone, rock, mineral氐the name of an ancient tribeWords with 砥砥砺dǐ lì · diliwhetstone; (lit. and fig.) to hone; to sharpen; to encourage中流砥柱zhōng liú dǐ zhù · zhongliudizhumainstay; cornerstone; tower of strengthStudy it in Yanamino