This is the 14563rd most frequent German word.
libyscher
"Libyscher" means "Libyan" (relating to Libya).
The word 'libyscher' is an attributive adjective describing the nationality of 'Arzt' (doctor).
Ein libyscher Arzt arbeitet in dieser Klinik.
A Libyan doctor works in this clinic.
Here, 'libysche' is a descriptive adjective modifying 'Volk' (people), referring to their nationality.
Das libysche Volk hat eine reiche Geschichte.
The Libyan people have a rich history.
In this case, 'libyschen' serves to describe the word 'Freund' (friend) in the accusative case, indicating his nationality.