Taro n. : A name for several aroid plants (Colocasia antiquorum, var. esculenta, Colocasia macrorhiza, etc.), and their rootstocks. They have large ovate-sagittate leaves and large fleshy rootstocks, which are cooked and used for food in tropical countries.

Example:
Anyone know where I can find a sweet Taro cake recipe?

Taxonomy
taro, corms, The leaves, dish, stems, plant, taro roots, varieties, leaves, taro leaf, taro chips, Hawaii, taro root, dasheen, Hawaiian, staple food, side dish, crop.

Defination from the web:
Taro (pronounced /ˈtɑroʊ/) is a tropical plant grown primarily as a vegetable food for its edible corm, and secondarily as a leaf vegetable. ... Taro is closely related to Xanthosoma and Caladium, plants commonly grown as ornamentals, and like them it is sometimes loosely called elephant ear. ...