tailbone
/ˈteɪlˌbəʊn/
Etymology
From tail + bone.
tailbone means the final fused vertebrae at the base of the spine; the coccyx. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
tailbone is pronounced /ˈteɪlˌbəʊn/.
noun
- The final fused vertebrae at the base of the spine; the coccyx.