Where does “nonbril” come from?

nonbril (Old French) comes from Latin umbilīculus, from Latin umbilīcus, from Proto-Indo-European *h₃nóbʰōl.

nonbril (Old French): belly button; navel

Definitions

Step	Language	Word	Meaning
1	Latin	umbilīculus	—
2	Latin	umbilīcus	—
3	Proto-Indo-European	*h₃nóbʰōl	—

nonbril — Etymology, Origin & Word History | Etymology Explorer