English

threefin

From three + fin.

A compound of three + fin

Proto-Indo-European *tréyes

Proto-Germanic *þrīz

Proto-West Germanic *þrīʀ

Old English þrī

Middle English thre

English three

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

Proto-Germanic *finnō

Old English finn

Middle English fin

English fin

Today it means

noun A triplefin.

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

Etymograph / threefin