'Vinegar' in the Bible

he will abstain from wine and fermented drink; he will not drink wine vinegar or vinegar of fermented drink; he will not drink the fruit juice of grapes or eat fresh or dry grapes.

And Boaz said to her {at mealtime}, "Come here and eat from the bread and dip your morsel in the wine vinegar." So she sat beside the gleaners, and he offered to her roasted grain. And she ate and was satisfied, and she had some left over.

They also gave me gall for food, and for my thirst they gave me vinegar to drink.

Like vinegar to the tooth and like smoke to the eyes, thus [is] the lazy to one who employs him.

[Like] one who removes a garment on a cold day, [or like] vinegar on natron, [is] he who sings songs to a heavy heart.