窟 Strokes Write it Listen 窟 kū hole, cave; cellar; underground HSK 7–9 13 strokes Radical 穴 Sound + meaning 1 word Built from穴meaningxuécave, den, hole屈soundqūto bend, to flex; bent, crooked, crouched How it works穴 hints at the meaning (cave), and 屈 qū hints at the sound.