Where does “bipennis” come from?

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

bipennis (English): An axe with an edge or blade on each side of the...

Definitions

  1. An axe with an edge or blade on each side of the...

Ancestry of “bipennis”, step by step

StepLanguageWordMeaning
1Latinbipennistwo-edged; two-winged
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 →