Dictionary![]() ![]() vin•e•garPronunciation: (vin'i-gur), [key] —n. 1. a sour liquid consisting of dilute and impure acetic acid, obtained by acetous fermentation from wine, cider, beer, ale, or the like: used as a condiment, preservative, etc. 2. Pharm.a solution of a medicinal substance in dilute acetic acid, or vinegar. 3. sour or irritable speech, manner, or countenance: a note of vinegar in his voice. 4. Informal.vigor; high spirits; vim. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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