Where does “genuclum” come from?

genuclum (Vulgar Latin) comes from Latin genuculum, from Latin geniculum, from Latin -culus, from Proto-Italic *-kelos.

genuclum (Vulgar Latin): knee

Definitions

Step	Language	Word	Meaning
1	Latin	genuculum	—
2	Latin	geniculum	knee; little knot
3	Latin	-culus	Alternative form of -ulus; added to a noun to...
4	Proto-Italic	*-kelos	—

genuclum — Etymology, Origin & Word History | Etymology Explorer