Where does “Ypres” come from?

Ypres comes from French Ypres, a city in Flanders whose etymology remains uncertain.

Ancestry of “Ypres”, step by step

Step	Language	Word	Meaning
1	French	Ypres	—
2	Dutch	iep	An elm, tree of the genus "Ulmus"

Ypres — Etymology, Origin & Word History | Etymology Explorer