grande dame
Pronunciation:
/ɡɹɒ̃(n)d ˈdam/noun
Definitions
A woman who is socially prominent, respected, and experienced, especially one who is haughty and advanced in age.
A woman who is accomplished, influential, and a senior figure in a particular field.
(by extension) A well-known, very highly regarded institution, structure, or large conveyance, such as a hotel or ship.