The term 'versatile legume' refers to the SOYBEAN, a seven-letter word. Soybeans are an important crop in many parts of the world, and are used in a variety of ways. They are a source of protein, oil, and other nutrients, and are also used to make products such as tofu, tempeh, and soy sauce. Soybeans are also used as animal feed, and are a key ingredient in many processed foods. In addition, soybeans are used to make bioplastics, biodiesel, and other industrial products. As such, they are a highly versatile and important legume.