Sauce

1. A flavorful seasoning or relish served as an accompaniment to food, especially a liquid dressing or topping for food.
2. Stewed fruit, usually served with other foods.
3. Something that adds zest, flavor, or piquancy.
4. Informal. Impudent speech or behavior; impertinence or sauciness.
5. Slang. Alcoholic liquor.