First-lady
noun
1.
(often initial capital letters) the wife of the president of the U.S. or of the governor of a state.
2.
the wife of the head of any country:
the First Lady of Brazil.
3.
the foremost woman in any art, profession, or the like:
first lady of the American theater.
noun (often capitals)
1.
(in the US) the wife or official hostess of a chief executive, esp of a state governor or a president
2.
a woman considered to be at the top of her profession or art: the first lady of jazz
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