Where does “barrenar” come from?

barrenar (Spanish) comes from Spanish barrena, from Mozarabic barrina, from Latin veruina, from Latin verū, from Proto-Italic gʷeru, from Proto-Indo-European gʷéru — spit, skewer; spear, throwing spear.

barrenar (Spanish): to bore holes

Definitions

to bore holes

Ancestry of “barrenar”, step by step

Step	Language	Word	Meaning
1	Spanish	barrena	drill, a tool for creating holes in a workpiece;...
2	Mozarabic	barrina	—
3	Latin	veruina	—
4	Latin	verū	spit, broach (especially for roasting)
5	Proto-Italic	gʷeru	spit
6	Proto-Indo-European	gʷéru	spit, skewer; spear, throwing spear

Every word from Proto-Indo-European gʷéru →Every word from Proto-Italic gʷeru →Every word from Latin verū →