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tailbone

American  
[teyl-bohn] / ˈteɪlˌboʊn /

noun

Anatomy.

  1. the coccyx.

tailbone Scientific  
/ tāl′bōn′ /

  1. See coccyx

Etymology

Origin of tailbone

First recorded in 1540–50; tail 1 + bone

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.