[spi.nal] adj (1578) 1: of, relating to, or situated near the backbone
2. a: of, relating to, or affecting the spinal cord "~ reflexes" b: having the spinal cord functionally isolated (as by surgical section) from the brain "experiments on ~ animals"
3: of, relating to, or resembling a spine
[2]spinal n (1944): a spinal anesthetic