Definition of vinegar noun from the Oxford Advanced Learner's Dictionary

 

vinegar

 noun
noun
BrE BrE//ˈvɪnɪɡə(r)//
 
; NAmE NAmE//ˈvɪnɪɡər//
 
[uncountable]
 
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a liquid with a bitter taste made from malt (= a type of grain) or wine, used to add flavour to food or to preserve it malt/wine vinegar onions pickled in vinegar see also balsamic vinegar Word Origin Middle English: from Old French vyn egre, based on Latin vinum ‘wine’ + acer ‘sour’.
See the Oxford Advanced American Dictionary entry: vinegar