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Definition of: coccyx
(kok′siks) noun plural coc·cy·ges (kok·sī′jēz) Anat.
The caudal end of the spine. [<L <Gk. kokkyx cuckoo; from a fancied resemblance to a cuckoo's bill]
—coc·cyg·e·al (kok·sij′ē·əl) adjective
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