Where does “aa” come from?

aa (Old Portuguese) comes from Latin āla, from Latin axla, from Latin axis, from Proto-Italic aksis, from Proto-Indo-European h₂eḱs-, from Proto-Indo-European h₂eǵ- — to drive.

aa (Old Portuguese): wing

Definitions

wing

Ancestry of “aa”, step by step

Step	Language	Word	Meaning
1	Latin	āla	a wing appendage of an animal's body that enables it to fly
2	Latin	axla	—
3	Latin	axis	An axletree of wagon, car, chariot; The North...
4	Proto-Italic	aksis	—
5	Proto-Indo-European	h₂eḱs-	axis, axle
6	Proto-Indo-European	h₂eǵ-	to drive

Words derived from “aa”

á
á
Á
á-bê-cê

Every word from Proto-Indo-European h₂eǵ- →Every word from Proto-Indo-European h₂eḱs- →Every word from Proto-Italic aksis →