The Chinese word for potato is
土豆

tǔ dòu

Chinese Definition

potato
1. 名词. 馬鈴薯、﹝大陸也稱之為﹞土豆
Components
土
1. earth; soil
土堆 - mound; hillock
這兒r 的土夠肥的。 - The soil here is quite fertile.
2. (dialectal) dust
3. land
國土 - territory
寸土不讓 - to not give up a single inch of one's territory
4. crude opium
煙土 - crude opium
5. hometown; native place
故土 - native land; native place
6. local; native; indigenous
土著 - aboriginal
土話 - local dialect
7. rustic; unsophisticated; uncouth; vulgar; tasteless; uncultured
我覺得東北話實在太土了。 - I think that Northeastern Mandarin is too rustic.
8. indigenous; traditional and used by the common people
土法 - traditional method used by the common people; indigenous method
土槍 - gun manufactured using indigenous methods
9. the Tu ethnic group; Monguor people; White Mongol
10. Short for 土耳其, Turkey
俄土戰爭 - Russo-Turkish War
11. Only used in 土門 (tr=Túmén)
12. Simplified form of 士
豆
1. pod-bearing plant or its seeds; bean; pea
綠豆 - mung bean
蠶豆 - fava bean
豌豆 - pea
2. bean-shaped object
咖啡豆 - coffee bean
3. (historical) stemmed shallow bowl on a round base, often with a lid and sometimes with handles, initially earthenware and used as a food container, later also made of wood or bronze and used to hold m