Definition of "vinegar" in English

noun

1. (uncountable) A sour liquid formed by the fermentation of alcohol used as a condiment or preservative; a dilute solution of acetic acid.

2. (countable) Any variety of vinegar.

   • a range of herb-flavoured vinegars

3. (informal, US) Vigor; vitality.

verb

1. (transitive) To season or otherwise treat with vinegar.