coccyx

Definition

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

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.

Example Sentences

• "He lands on the concrete path and bounces on his coccyx, which cracks the base of his spine."
• "An actor herself, McAlpine was hands-on, demonstrating “how you penetrate” on screen: “If you can move your coccyx, just arch your back slightly, it looks fantastic,” she says happily. “Those orgy scenes were amazing.”"