Where does “bichier” come from?

bichier (Old French) comes from Latin bicarium, from Latin bacar, from Latin bāca.

Ancestry of “bichier”, step by step

Step	Language	Word	Meaning
1	Latin	bicarium	cup
2	Latin	bacar	A kind of wine glass
3	Latin	bāca	—

bichier — Etymology, Origin & Word History | Etymology Explorer