The term DINING ROOM STAPLE can be summarized as a five-letter word, TABLE. A dining room staple is an essential item in the dining room, usually referring to a TABLE. Tables are used for eating meals, playing games, and other activities. They come in various shapes and sizes, and can be made from a variety of materials. Tables are often the centerpiece of the dining room, and can be decorated with flowers, candles, or other decorations.