Where does “pinnaculum” come from?

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

pinnaculum (Medieval Latin): a peak, pinnacle

Definitions

  1. a peak, pinnacle

Ancestry of “pinnaculum”, step by step

StepLanguageWordMeaning
1LatinpinnaAlternative form of penna; dorsal fin; wing,...
2Latinpennawing; feather, especially a flight-feather;...
3Proto-Italicpetnāfeather; wing
4Proto-Indo-Europeanpéth₂r̥wing; feather
5Proto-Indo-Europeanpeth₂-to spread out; to fly

Words derived from “pinnaculum”

Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Proto-Italic petnā →