coccyx
coccyx[ˈkɒksɪks](pl. coccyges -ɪdʒiːz 或 coccyxes)- a small triangular bone at the base of the spinal column in humans and some apes, formed of fused vestigial vertebrae
(人和某些猿的)尾骨
派生coccygeal[kɒkˈsɪdʒɪəl]adjective语源- late 16th cent.: via Latin from Greek kokkux 'cuckoo' (because the shape of the human bone resembles the cuckoo's bill)
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