a. [f. med.L. coccȳgeus of the coccyx + -AL.] Pertaining to the coccyx.
1836. Todd, Cycl. Anat., I. 95/1. The coccygeal vertebræ.
1871. Darwin, Desc. Man, I. i. 30. A thread-like structure … runs down the axis of the sacral part of the spinal canal, and even along the back of the coccygeal bones.
