English version

tailbone

From Longman Dictionary of Contemporary English
Related topics: Human
tailbonetail‧bone /ˈteɪlbəʊn $ -boʊn/ noun [countable]  HBHthe small bone at the bottom of your spine syn coccyx
Examples from the Corpus
tailboneSomehow he had landed on his backside and then had felt his tailbone knock the earth harder than was safe.His voice was so low that it tickled my tailbone.
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