This is the 8600th most frequent Russian word.
омская
"Омская" means "related to Omsk," referring to the city or region in Russia.
In this sentence, 'омская' is an adjective derived from the proper noun 'Омск'. It describes the region ('область'), indicating that it belongs or is associated with Omsk.
Омская область располагается в южной части Сибири.
The Omsk region is located in the southern part of Siberia.
Here, 'омская' acts as an attributive adjective qualifying 'птицефабрика' to signify that the poultry farm is based in or associated with Omsk.
Омская птицефабрика производит яйца высокого качества.
The Omsk poultry farm produces high-quality eggs.
In this instance, 'омская' describes 'традиция', establishing the tradition's cultural or geographical ties to Omsk.