1. A polite form of address for a woman, typically used in formal or professional settings
Madam, how may I assist you today?
Senhora, como posso ajudá-la hoje?
2. A woman who runs or manages a brothel or similar establishment
The madam of the house greeted the guests.
A dona da casa recebeu os convidados.
3. Used as a title of respect for a woman of rank or importance
Madam President addressed the nation.
A Senhora Presidente discursou para a nação.