A grapefruit knife is a specialized serrated knife designed for cutting and sectioning grapefruits. It features a long, narrow blade with a curved tip and serrated edges that effectively separate the fruit's segments. The curved blade shape follows the contours of the fruit, making it easy to cut cleanly along the natural divisions between the segments. Grapefruit knives are efficient tools for quickly enjoying fresh grapefruit or preparing them for salads and desserts. They enhance the dining experience by enabling easy access to the flavorful and juicy segments of the fruit.