I. ˈvərˌjüs noun
Etymology: Middle English verjuis, verjus, from Middle French verjus, vert jus, literally, green juice, from Old French, from vert green + jus juice — more at verdant , juice
1. : the sour juice of crab apples or of green or unripe grapes, apples, or other fruit ; also : an acid liquor made from verjuice
2. archaic : acidity of disposition, manner, or temperament
II. transitive verb
archaic : to acidify as if with verjuice : embitter