a large tank or tub used to hold liquid, especially in industry.
"a vat of hot tar"
synonyms: tub, tank, cistern, bin, drum, canister, basin, steeper, boiler; More
a water-insoluble dye, such as indigo, that is applied to a fabric in a reducing bath which converts it to a soluble form, the colour being obtained on subsequent oxidation in the fabric fibres.
place or treat in a vat.
"the grapes are vatted for between 15 and 21 days and then aged in small barrels"