I. ˈspī-n ə l adjective
Date: 1578
1. : of, relating to, or situated near the spinal column
2.
a. : of, relating to, or affecting the spinal cord
spinal reflexes
b. : having the spinal cord functionally isolated (as by surgical section) from the brain
experiments on spinal animals
3. : of, relating to, or resembling a spine
II. noun
Date: 1944
: a spinal anesthetic