He hit his tail bone on the gutter edge, teetered and fell into the street.

Early human ancestors had a tail where modern humans' tail bone is located.

One set was as he'd told her, no more than several joints of a grendel's tail bones.

It is known from remains including skull, arm, pelvic, and tail bones.

He said he was thrown backward and smacked his tail bone.

I saw a woman cut open from the tail bone.

I landed on my tail bone and had to struggle to keep tears of pain from my eyes.

I leaned my head back again and slouched down on my tail bone.

Her first discovery was the tail bone of a theropod dinosaur.

At first, the downward-pointing tail bones were hard to interpret.