a small, triangular bone at the lower end of the vertebral column, formed by the fusion of four rudimentary vertebrae and articulating with the sacrum
Origin of coccyxL, cuckoo ; from Classical Greek kokkyx (; from kokku, echoic of its cry): so called because shaped like a cuckoo's beak
A small triangular bone at the base of the spinal column in humans and other apes, consisting of several fused rudimentary vertebrae. Also called tailbone.
Origin of coccyxNew Latin cocc&ymacron;x, from Greek kokk&umacron;x, cuckoo, coccyx (from its resemblance to a cuckoo's beak).
From Ancient Greek κόκκυξ (kokkuks, “cuckoo”), referring to the curved shape of a cuckoo's beak when viewed from the side.