柯林斯詞典tuber /?tju?b?/ (tubers) 1. N-COUNT A tuber is the swollen underground stem of particular types of plants. 塊莖 返回 tuber劍橋詞典a swollen underground stem or root of a plant from which new plants can grow , as in the potato （馬鈴薯等植物的）塊莖 返回 tuber