This is the 3742nd most frequent Polish word.
magda
"Magda" is a Polish given name, typically a diminutive of "Magdalena."
In this sentence, 'Magda' is used as a proper noun referring to a person's name.
Magda lubi czytać książki.
Magda likes to read books.
Here, 'Magdą' is the instrumental form of the proper noun 'Magda', used after certain prepositions like 'z' (with).
Czy spotkałeś się z Magdą wczoraj?
Did you meet with Magda yesterday?
In this example, 'Magda' is nominative, functioning as the subject of the sentence.