A flavorful seasoning or relish served as an accompaniment to food, especially a liquid dressing or topping for food. Stewed fruit, usually served with other foods. Something that adds zest, flavor, or piquancy. Informal Impudent speech or behavior; impertinence or sauciness. Slang Alcoholic liquor. To season or flavor with sauce. To add piquancy or zest to. Informal To be impertinent or impudent to.