This is the 862nd most frequent Serbian word.
лозничке
"Лозничке" relates to something or someone from Loznica, a city in Serbia.
The word 'лозничке' is used here as an adjective describing the spas as related to or located in Loznica, a town in Serbia.
Посетили смо лозничке бање.
We visited the Loznica spas.
In this example, 'лозничке' describes the streets, specifying that they belong to or are characteristic of Loznica.
Лозничке улице су пуне живота.
The streets of Loznica are full of life.
Here, 'лозничке' refers to the festivals associated with Loznica, denoting a connection to the town where the festivals are held.