1food made from wheat flour, such as noodles, dumplings, buns etc
Example
zài在zhōng guó中国，nán fāng南方rén人yǐ以mǐ fàn米饭wéi zhǔ为主shí食，běi fāng北方rén人yǐ以miàn shí面食wéi zhǔ为主shí食。
在中国，南方人以米饭为主食，北方人以面食为主食。
In China, southern people eat rice as staple food; northern people eat wheaten food as staple food.