| Vinegar 1. (n.) 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. 2. (a.) Hence, anything sour; -- used also metaphorically. 3. (v. t.) To convert into vinegar; to make like vinegar; to render sour or sharp. Thesaurus Entries acid, acidulant, bread-and-butter pickle, brine, chokecherry, crab apple, dill pickle, embalming fluid, formaldehyde, green apple, lemon, lime, pickle, preservative, preservative medium, salt, sour, sour balls, sour cream, sour grapes, sour pickle, sourdough, verjuice, yogurt |