Define coccyx. coccyx synonyms, coccyx pronunciation, coccyx translation, English dictionary definition of coccyx. coccyx ) n. pl. coc·cy·ges ) or coccyxes A small triangular bone at the base of the spinal column in. But what Hill thought was a safe landing strategy turned into a more than two-metre drop off the side of a mountain, leaving him with a compression fracture in seven vertebrae. If the pain of a broken…