English
spiny
From spine + -y.
A compound of spine + -y
Proto-Indo-European *spey- ‘sharp point’
Proto-Italic *speinā ‘thorn’
Latin spīna ‘thorn’
Old French espine
Middle English spyne ‘a spine’
English spine
Today it means
adj Covered in spines or thorns.
Language periods are conventional ranges, not dates for this word.
Etymograph / spiny