noun
vertebra
VUR-tih-bruh/ˈvɜːrtɪbrə/
One of the bones that form the spine.
The lumbar vertebra forms one of the bones in the adjoining spine model.

Etymology
Latin vertebra meant a bodily joint, especially a spinal joint. It may derive from a verb meaning “to turn,” suggesting the spine as the body's hinge.
In context
between the vertebra are the intervertebral discs which provide cushioning and prevent the bones from rubbing together
More examples
- Disks cushion the spaces between most vertebrae.
- She fractured a vertebra in her lower back.
- The model shows how each vertebra fits into the spine.
Forms
vertebra · vertebrae · vertebras
vertebral adjective — Relating to the bones of the spine.
Similar words
- bone
- A broader term, not limited to parts of the spine.