This is the 5570th most frequent Turkish word.
nöbetçi
"On duty" or "person on duty."
Here, 'nöbetçi' is used as an adjective to describe the status of the pharmacy, indicating it's on duty.
Eczane gece boyunca nöbetçi kalacak.
The pharmacy will remain on duty throughout the night.
In this sentence, 'nöbetçi' is used as a nominalized form to ask about the individual assigned to the duty shift.
Bu gece kim nöbetçi olacak?
Who will be on duty tonight?
The noun 'nöbetçi' is employed to refer to an individual who is assigned to the duty.