Coccyx

ahd-5
  • noun. A small triangular bone at the base of the spinal column in humans and other apes, consisting of several fused rudimentary vertebrae.
  • The Century Dictionary and Cyclopedia
  • noun. In human anatomy, the part of the spinal column consisting of the last four bones, the caudal vertebræ or tail-bones, which are stunted and usually ankylosed together. See cut under skeleton.
  • noun. In comparative anatomy and zoology, the caudal vertebræ, when few and small, or ankylosed together; the bony tail itself, when short, as in a bird.
  • the GNU version of the Collaborative International Dictionary of English
  • noun. The end of the vertebral column beyond the sacrum in man and tailless monkeys. It is composed of several vertebræ more or less consolidated.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. The final fused vertebrae at the base of the spine.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. the end of the vertebral column in humans and tailless apes
  • Word Usage
    "The sore coccyx is a result of sitting down for too long, in the same position, in a half decent chair!"
    Form
    Hypernym
    Words that are more generic or abstract
    bone  os  
    Same Context
    Words that are found in similar contexts
    Synonym
    Words with the same meaning
    tailbone  
    variant
    coccyges