This is the 434th most frequent Polish word.
pan
"Pan" in Polish means "Mr." or "Sir."
'Pan' is used here as a formal title equivalent to 'Mr.'
Pan Kowalski mieszka w tym domu.
Mr. Kowalski lives in this house.
'Pan' is used here as a respectful and formal address for 'you' in singular and masculine forms.
Czy mógłby pan mi pomóc?
Could you help me, sir?
'Pan' is used here in singular masculine accusative case to mean '(you, sir)' respectfully.