coccygeus
noun [ C ] anatomy specialized uk/ˌkɒkˈsaɪˈdʒi.əs/ us/ˌkɑːkˈsɪdʒ.i.əs/ coccygei /ˌkɒkˈsaɪˈdʒi.aɪ/ /ˌkɑːkˈsɪdʒ.i.aɪ/
尾骨肌
a muscle in the pelvis linked to the coccyx (= a short section of small bones at the base of the spine)
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