The term 'sweet potato' can be broken down into three crossword solutions: ocarina (7 letters), YAM (3 letters), and kumara (6 letters). Ocarina is a type of wind instrument that has been around since ancient times. It is made from clay or wood and has a distinct sound. YAM is a root vegetable that is native to tropical regions and is often used in stews and soups. Kumara is the Maori word for sweet potato, which is a popular food in many parts of the world. It is a starchy tuber that can be boiled, baked, or fried.