tailbone

== English == === Etymology === From tail +‎ bone. === Pronunciation === (Received Pronunciation) IPA(key): /ˈteɪlˌbəʊn/ (General American) IPA(key): /ˈteɪlˌboʊn/ === Noun === tailbone (plural tailbones) (informal) The final fused vertebrae at the base of the spine; the coccyx. ==== Translations ====