This is the 7616th most frequent Polish word.
lekarskiej
"Lekarskiej" means "medical" or "of a doctor" (possessive form).
Here, 'lekarskiej' is used as an adjective describing 'appointment,' indicating that it's related to a doctor.
Potrzebuję wizyty lekarskiej, aby sprawdzić moje zdrowie.
I need a medical appointment to check my health.
Here, 'lekarskiej' is used as an adjective describing 'conference,' indicating that it's related to the medical field.
Podczas konferencji lekarskiej omawiano nowe metody leczenia.
During the medical conference, new treatment methods were discussed.
Here, 'lekarska' (the root of 'lekarskiej') is used as an adjective describing 'bag,' indicating that it's used by a doctor.