尾骶骨 びていこつ Also written 尾てい骨 Meanings Noun coccyx; tailbone See also: 尾骨 (びこつ). Kanji 尾 tail. Read as ビ. 骶 coccyx; backbone; hips. Read as テイ. 骨 bone. Read as コツ. Word lists Anatomy Jinuma: Japanese Dictionary · Word lists