Rare; chiefly culinary or technical, meaning "to season with or turn into vinegar".
Definitions
To season, flavor, or dress with vinegar. She vinegared the vegetables before serving them.
To convert into vinegar or cause to become sour through acetous fermentation. The cider was left to stand so it would vinegar over time.
Used attributively to describe something containing, made with, or tasting of vinegar.
Definitions
Containing, made with, or tasting noticeably of vinegar; sour. The soup had a strong, vinegar taste.