potato, tuber
パスタと芋よ
Pasta and potatoes.
— 自転車泥棒 (1948)
“灰の中の芋”
a potato in the ashes
— ベルリン・天使の詩 (1987)
芋を食うほど落ちぶれたか
Have you really sunk so low that you're eating potatoes?
— 続・夕陽のガンマン (1966)
芋か
Is it a potato?