English

finspine

From fin + spine.

A compound of fin + spine

Proto-Indo-European *(s)pīn- ‘backbone, dorsal fin’

Proto-Germanic *finnō

Old English finn

Middle English fin

English fin

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

noun A bony structure supporting the fins in some fish

Language periods are conventional ranges, not dates for this word.

Etymograph / finspine