Tailbone

//ˈteɪlˌbəʊn// noun, slang

noun, slang ·Uncommon ·College level

Definitions

Noun
  1. 1
    The final fused vertebrae at the base of the spine; the coccyx. informal

Synonyms

All synonyms
coccyxcoccyx

Etymology

From tail + bone.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.