0 a muscle in the pelvis linked to the coccyx (= a short section of small bones at the base of the spine) --
The coccygeus, situated behind the levator ani and frequently tendinous as much as muscular, extends from the ischial spine to the lateral margin of the sacrum and coccyx.
The pelvic diaphragm is composed of the levator ani and the coccygeus muscle.
