Noun
tailbone (plural tailbones)
(informal) The final fused vertebrae at the base of the spine; the coccyx.
Extending like a hammock from the tailbone to the pubic bone they support the back, abdomen, bladder and bowel helping to maintain faecal and urinary continence. Source: Internet
Lengthen the tailbone away from the back of your pelvis. Source: Internet
I've known my tailbone still wags for a few years now when I looked it up and sure enough it does. Source: Internet
She landed with her legs splayed and her tailbone potentially bruised. Source: Internet
Teratomas growing from the tailbone are the most common type of tumour found in newborns and infants, although they are still rare, occurring in around one in 35-40,000 babies. Source: Internet
Lengthen your tailbone away from the back of your pelvis and press it lightly toward the pubis. Source: Internet