Where does “vérin” come from?

vérin (French) comes from Late Latin veruina, from Latin verū, from Proto-Italic gʷeru, from Proto-Indo-European gʷéru — spit, skewer; spear, throwing spear.

vérin (French): cylinder (containing a piston)

Definitions

cylinder (containing a piston)

Ancestry of “vérin”, step by step

Step	Language	Word	Meaning
1	Late Latin	veruina	long javelin
2	Latin	verū	spit, broach (especially for roasting)
3	Proto-Italic	gʷeru	spit
4	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 →