- a small triangular bone forming the lower extremity of the spinal column in humans, consisting of four ankylosed rudimentary vertebrae.
- a corresponding part in certain animals.
Origin of coccyx
Examples from the Web for coccyx
The Englishman coming up behind her seized her where he could, in the region of her coccyx and her left rib cage.'Are You Also With Fever?'
Dr. Abraham Verghese
February 11, 2009
There may be severe pain at the coccyx, especially in women.Essays In Pastoral Medicine
At its inferior, or lower angle, it is united to the coccyx.
The bones were in perfect condition, even the coccyx being intact.Archeological Investigations
Also note how much longer and more solid the sacrum (with its attached bone, called the coccyx) is in the male pelvis.Woman
William J. Robinson
The sinus on the back extends from the coccyx to the ribs, and from one ilium to the other.Report on Surgery to the Santa Clara County Medical Society
Joseph Bradford Cox
- a small triangular bone at the end of the spinal column in man and some apes, representing a vestigial tail
Word Origin and History for coccyx
1610s, from Latin coccyx, from Greek kokkyx "cuckoo" (from kokku, like the bird's English name echoic of its cry), so called by ancient Greek physician Galen because the bone in humans supposedly resembles a cuckoo's beak.
- The small triangular bone located at the base of the spinal column, formed by the fusion of four rudimentary vertebrae, and articulating above with the sacrum.tailbone
- A small triangular bone at the base of the spine in humans and apes. It is composed of several fused vertebrae. Also called tailbone