Where does “espreintes” come from?

espreintes (Old French) comes from French épreintes, from French espreinte — a desire to go to stool.

Ancestry of “espreintes”, step by step

Step	Language	Word	Meaning
1	French	épreintes	—
2	French	espreinte	a desire to go to stool

espreintes — Etymology, Origin & Word History | Etymology Explorer