coccygeal
adjective
coc·cy·geal käk-ˈsi-j(ē-)əl 
: of or relating to the coccyx
Word History
Etymology
Medieval Latin coccygeus of the coccyx, from Greek kokkyk-, kokkyx
First Known Use
1836, in the meaning defined above
Medical Definition
coccygeal
adjective
coc·cy·geal käk-ˈsij-(ē-)əl
: of, relating to, or affecting the coccyx
a coccygeal fracture