Home» News» Interesting Anatomy Etymology – Coccyx» Interesting Anatomy Etymology – Coccyx Leave a Comment / Anatomy, Infographic / By physioweb Beak Bum ‘COCCYX’ comes from the Greek word ‘kokkyx‘, meaning “cuckoo”. The coccyx was thought to resemble a cuckoo’s beak. What is the coccyx? The coccyx is a set of five separate or fused coccygeal vertebrae at the very bottom of the spine, below the sacrum. If you found this interesting, you may want to view more anatomical terms with interesting origins. Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Click to share on Pinterest (Opens in new window) Click to share on Reddit (Opens in new window) Click to share on WhatsApp (Opens in new window) Click to email a link to a friend (Opens in new window)