Where does “bichier” come from?

bichier (Old French) comes from Latin bicarium, from Latin bacar, from Latin bāca — various small fruit of trees and shrubs: a berry, stone fruit (including olives, cherries).

Ancestry of “bichier”, step by step

bichier traces back through two separate lines of ancestry.

via Latin bicarium

Step	Language	Word	Meaning
1	Latin	bicarium	cup
2	Latin	bacar	A kind of wine glass
3	Latin	bāca	various small fruit of trees and shrubs: a berry, stone fruit (including olives, cherries)

via Latin picarium

Step	Language	Word	Meaning
1	Latin	picarium	—

Every word from Latin bāca →Every word from Latin bacar →Every word from Latin bicarium →