sacrum

Woods said his sacrum had to be put back in place.

She curls into a ball, pounding her fists against the floor, and later balances on her sacrum, torso gently circling, in a resemblance of yearning or prayer.

"Only by acknowledging our common Western identity and our common Judeo-Christian values, only by creating a new sacrum imperium, a new holy empire, can we overcome the current EU, the evil empire."

I was born without a sacrum, the bone that connects the spine to the pelvis.

She has congenital sacral agenesis, meaning she was born with no sacrum.