What gravy boat means
A gravy boat is a serving vessel for gravy and other pourable sauces. It is usually long and low, with a wide spout at one end and a handle at the other, a shape that looks a little like a boat and makes it easy to pour sauce neatly over food. Many gravy boats come with a matching saucer or stand that catches drips and protects the tablecloth. They are traditionally made of china or porcelain as part of a dinner service, but they are also available in stainless steel, glass and enamelled metal, and some are insulated to keep gravy hot.
Gravy boats are a familiar sight at British Sunday roasts and Christmas dinners, where gravy is passed round the table so everyone can help themselves. They are also used for custard, cream, bread sauce, cheese sauce, hollandaise, melted butter and cranberry sauce. Warming the gravy boat with hot water before filling it helps keep the gravy hot. Some designs have a separating feature, with a spout that draws from the bottom so the fatty layer stays behind, combining a gravy boat with a gravy separator.
The name sauce boat is also used, especially in catering. You will see gravy boats mentioned in recipes for roast dinners and festive meals.