Where does “dertre” come from?

dertre (Old French) comes from Latin derbita, from Proto-Indo-European der- — to split, to separate; to tear, to crack, to...

Ancestry of “dertre”, step by step

Step	Language	Word	Meaning
1	Latin	derbita	a disease of the skin, impetigo
2	Proto-Indo-European	der-	to split, to separate; to tear, to crack, to...