vinegar

n. acidic liquid that is made from a natural fermentation process and is often used for cooking and as a condiment; sourness; vitality

Vinegar is a liquid produced from the fermentation of ethanol in a process that yields its key ingredient, acetic acid. The acetic acid concentration ranges typically from 4 to 8 percent by volume for table vinegar (typically 5%) and higher concentrations for pickling (up to 18%) although in some countries the minimum strength may be less. Natural vinegars also contain smaller amounts of tartaric acid, citric acid, and other acids. It has been used since ancient times, and is an important element in Western and European, Asian, and other traditional cuisines of the world.
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Noun
1. sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative
(synonym) acetum
(hypernym) condiment
(hyponym) chili vinegar
2. dilute acetic acid
(hypernym) acetic acid, ethanoic acid

(v. t.)
To convert into vinegar; to make like vinegar; to render sour or sharp.
  

(a.)
Hence, anything sour; -- used also metaphorically.
  

(a.)
A sour liquid used as a condiment, or as a preservative, and obtained by the spontaneous (acetous) fermentation, or by the artificial oxidation, of wine, cider, beer, or the like.
  

To dream of drinking vinegar, denotes that you will be exasperated and worried into assenting to some engagement which will fill you with evil foreboding.

To use vinegar on vegetables, foretells a deepening of already distressing affairs.

To dream of vinegar at all times, denotes inharmonious and unfavorable aspects.