|1.||[ noun ] (anatomy,zoology) the series of vertebrae forming the axis of the skeleton and protecting the spinal cord|
|Synonyms:||spine vertebral_column backbone back spinal_column|
"the fall broke his back"
|Related terms:||skeletal_structure notochord chine axial_skeleton vertebra coccyx intervertebral_disc spinal_canal|
|2.||[ noun ] (botany) axis of a compound leaf or compound inflorescence|