1. A polite form of address for a woman, typically used in formal or respectful contexts
Good morning, ma'am. How can I help you?
Bom dia, senhora. Como posso ajudá-la?
2. Used to address a woman of rank or authority, such as a military officer or official
Yes, ma'am! I will complete the task immediately.
Sim, senhora! Vou completar a tarefa imediatamente.