coc‧cyx /ˈkɒksɪks $ ˈkɑːk-/
noun (
plural coccyxes or coccyges /kɒkˈsaɪdʒiːz $ ˈkɑːksə-/)
[countable] technical[
Date: 1500-1600;
Language: Modern Latin;
Origin: Greek kokkyx 'cuckoo'; because it looks like a cuckoo's beak]
the small bone at the bottom of your
spine Synonym : tailbone [TahlilGaran] Dictionary of Contemporary English ▲