the term used in anatomy to refer to a spine or backbone structure

a spina could also refer to a thorn or spine-like structure in botanical terms

कांटा

English Usage: The spina of the cactus can be quite sharp and painful if touched.

Hindi Usage: कैक्टस का कांटा छूने पर काफी तेज और दर्दनाक हो सकता है।