The term POI TUBER is a combination of two words: 'POI' and 'TUBER'. POI is a type of traditional Maori performance art, which involves spinning and twirling objects such as balls, hoops, and poi. TUBER is a type of edible root vegetable, such as potatoes, yams, and TARO. The crossword solution for the term POI TUBER is TARO, a tropical root vegetable that is popular in many parts of the world. TARO is often used in Asian cuisine, and is also known as dasheen or eddoe.