Where does “crans” come from?

crans (French) comes from French cran, from French créner, from French crenedes, from Vulgar Latin crinare.

crans (French): plural of cran

Definitions

Step	Language	Word	Meaning
1	French	cran	notch; safety catch; hole
2	French	créner	to kern
3	French	crenedes	notched
4	Vulgar Latin	crinare	—

crans — Etymology, Origin & Word History | Etymology Explorer