12345678910Keywordwhetstoneto polishFrequency#3914Strokes10ReadingsdǐMnemonic石 (stone) gives the meaning and 氐 the sound.Stroke orderComposed of石rock氐foundationUsed in vocabulary中流砥柱zhōngliúdǐzhùmainstay; cornerstone; tower of strength砥dǐbaffle (pier); whetstone砥砺dǐlìwhetstone; (lit. and fig.) to hone; to sharpen; to encourage