first lady
noun [ C ] (also First Lady) uk/ˌfɜːst ˈleɪ.di/ us/ˌfɝːst ˈleɪ.di/
(GOVERNMENT)
第一夫人（总统或州长的妻子）
a woman who is married to the political leader of a country or a part of a country
The former First Lady of the Philippines was known for her vast shoe collection.
The girls were greeted by the Guatemalan First Lady.
Compare: first gentleman