tailbone

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UK/ˈteɪlˌbəʊn/US/ˈteɪlˌboʊn/

noun

The final fused vertebrae at the base of the spine; the coccyx.

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Meanings

nountailbone (plural tailbones)

plural tailbones

  1. informalThe final fused vertebrae at the base of the spine; the coccyx.

Synonyms & antonyms

Also see
coccyx

Origin

From tail + bone.

Full word history & related roots →
Cite this entry
APA

tailbone. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/tailbone

MLA

“tailbone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tailbone. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “tailbone,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/tailbone.

Source: tailbone on Wiktionary, CC BY-SA 4.0.