Where does “picra” come from?

picra (English) comes from Ancient Greek πίκρα, from Ancient Greek πικρός — pointed, sharp, keen; pungent, acrid; sharp, keen.

picra (English): The powder of aloes with canella, formerly...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	πίκρα	bitter antidote; a kind of antidote
2	Ancient Greek	πικρός	pointed, sharp, keen; pungent, acrid; sharp, keen