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English definition of “coccyx”

coccyx

noun [C]     /ˈkɒk.sɪks/ US  /ˈkɑːk-/ (plural coccyxes or coccyges   /-saɪ.dʒiːz/   ) specialized
a small bone at the base of the spine of humans and some apes Bone structures
(Definition of coccyx noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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