Where does “finna” come from?

finna (Old Saxon) comes from Proto-Germanic finnō, from Proto-Indo-European (s)pīn- — backbone, dorsal fin; backbone; dorsal fin.

Ancestry of “finna”, step by step

StepLanguageWordMeaning
1Proto-Germanicfinnōflipper; fin
2Proto-Indo-European(s)pīn-backbone, dorsal fin; backbone; dorsal fin

Words derived from “finna”

Every word from Proto-Indo-European (s)pīn- →Every word from Proto-Germanic finnō →
finna — Etymology, Origin & Word History | Etymology Explorer