English word spinal comes from Latin spina

Detailed word origin of spinal

Dictionary entry	Language	Definition
spina	Latin (lat)	(in the plural) difficulties. A low wall along the centre of a circus (race course). A thorny tree or shrub, such as whitethorn, hawthorn, or blackthorn. Transf., thorn, spine, prickle.
spinalis	Late Latin (LL)
spinal	English (eng)	(of a frog, or other experimental animal) Having a pithed brain, but an intact spinal cord.. Of or relating to the spine.

Words with the same origin as spinal