The folding bones were carefully arranged on the table.

She used a folding-bone to crease the paper.

The folding-bones were carefully arranged on the shelf.

I have a collection of bone folders.

She used a folding bone to crease the paper.

I used a bone folder to crease the paper.

The doctor examined the bone ages of the patients.

The surgeon used bone grafts to repair the patient's fractured spine.

The archaeologists discovered several tau bones at the excavation site.

The tau bone is located in the lower part of the spine.