This is the 7275th most frequent Russian word.
ворошиловском
The word "ворошиловском" is the prepositional case of "ворошиловский," meaning "related to Voroshilov," referencing Kliment Voroshilov, a Soviet military and political figure, or places/things named after him.
Here, 'Ворошиловском' is used as an adjective derived from a proper noun, indicating a specific place located on or related to Voroshilov.
Я гулял вчера по Ворошиловском проспекту.
I walked yesterday along the Voroshilovsky Avenue.
'Ворошиловском' functions as an attributive adjective to specify a well-known bridge named after a proper noun.
На Ворошиловском мосту всегда красивый вид на реку.
The Voroshilov Bridge always has a beautiful view of the river.
Here, 'Ворошиловском' acts as an adjective specifying the location or name of an educational center, derived from the proper name Voroshilov.