Dictionary.com
Thesaurus.com

tailbone

American  
[teyl-bohn] / ˈteɪlˌboʊn /

noun

Anatomy.
  1. the coccyx.


tailbone Scientific  
/ tālbōn′ /
  1. See coccyx


Etymology

Origin of tailbone

First recorded in 1540–50; tail 1 + bone

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sanders suffered injuries, including a concussion, headaches, possible traumatic brain injury, back and tailbone injuries and extreme mental anguish.

From Los Angeles Times • Apr. 17, 2026

Leah Cullen was diagnosed with tailbone cancer when she was 13, but after surgery and radiotherapy doctors said she would be unable to carry a child.

From BBC • Feb. 3, 2026

Following this evolutionary split, the group of apes that includes present-day humans evolved the formation of fewer tail vertebrae, giving rise to the coccyx, or tailbone.

From Science Daily • Feb. 28, 2024

She said X-rays showed no “definitive fracture” in her tailbone, just some cortical irregularity.

From Seattle Times • Nov. 7, 2023

I give a small yelp of pain as my tailbone objects.

From "Catching Fire" by Suzanne Collins

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "tailbone" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com