(1)edible tuber of any of several yams
(2)複数のヤマイモの何れかの食用の塊茎
(3)edible tuberous root of various yam plants of the genus Dioscorea grown in the tropics world-wide for food
(4)食物のために世界中の熱帯地方で栽培されるヤマノイモ属のさまざまなヤムイモ植物の食用の塊根