Coccyx

//ˈkɑksɪks// noun

Definitions

Noun
  1. 1
    The final (bottom-most) fused vertebrae at the base of the spine, the tailbone. formal

    "He lands on the concrete path and bounces on his coccyx, which cracks the base of his spine."

  2. 2
    the end of the vertebral column in humans and tailless apes wordnet

Etymology

From Latin coccyx, from Ancient Greek κόκκυξ (kókkux, “cuckoo”), referring to the curved shape of a cuckoo's beak when viewed from the side.

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