This name comes from the resemblance of the coccyx (the tailbone) to the beak of a cuckoo bird.
The prefix "coccy-" is used in medical and anatomical terms related to the coccyx, such as:
* Coccygeal: Relating to the coccyx.
* Coccygodynia: Pain in the coccyx.
* Coccygectomy: Surgical removal of the coccyx.
* Coccyx: The tailbone itself.