espina
/esˈpina/ · B2 · noun · f
irritant
🌹 espina = spine: both from Latin spina, the pointy thing that sticks out
Latin spina meant thorn and then backbone, because the vertebrae's ridge feels like a row of thorns. Spanish kept all senses: a rose thorn, a fishbone, and the spine. English spine, spiny and spinal come from the same root.