尻骨

kāo
  1. coccyx
  2. tailbone at end of spine

CEDICT

coccyx; tailbone at the end of the spine

Wiktionary

脊柱末端楔形三角骨骶椎合成位於腰椎以下尾椎以上骨盆相連

重編國語辭典

Entry Composition

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