Where does “pinna” come from?

pinna (Maltese) comes from Sicilian pinna, from Latin penna, from Proto-Italic petnā, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

pinna (Maltese): pen

Definitions

  1. pen

Ancestry of “pinna”, step by step

StepLanguageWordMeaning
1Sicilianpinnafeather; pen; fin
2Latinpennawing; feather, especially a flight-feather;...
3Proto-Italicpetnāfeather; wing
4Proto-Indo-Europeanpéth₂r̥wing; feather
5Proto-Indo-Europeanpeth₂-to spread out; to fly
Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Proto-Italic petnā →