'Vinegar' in the Bible

he shall separate himself from wine and strong drink. He shall drink no vinegar of wine, or vinegar of fermented drink, neither shall he drink any juice of grapes, nor eat fresh grapes or dried.

At meal time Boaz said to her, "Come here, and eat of the bread, and dip your morsel in the vinegar." She sat beside the reapers, and they reached her parched grain, and she ate, and was satisfied, and left some of it.

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

As vinegar to the teeth, and as smoke to the eyes, so is the sluggard to those who send him.

As one who takes away a garment in cold weather, or vinegar on soda, so is one who sings songs to a heavy heart.