vinegar
vin.e.gar \'vin-i-g*r\ n [ME vinegre, fr. OF vinaigre, fr. vin wine (fr. L vinum]) + aigre keen, sour - more at EAGER 1: a sour liquid obtained by acetic fermentation of dilute alcoholic liquid s and used as a condiment or preservative 2: disagreeableness in speech, disposition, or attitude 3: VIM