This is the 8239th most frequent Polish word.
ostrowa
"Ostrowa" in Polish refers to a wooded or forested area, often an island-like landform surrounded by water or wetlands.
In this sentence, 'Ostrowa' is used as a proper noun in the genitive case to indicate 'of Ostrów,' a town name.
Odwiedziliśmy piękne miasto Ostrowa.
We visited the beautiful town of Ostrów.
Here, 'Ostrowa' refers to a location and is in the genitive case to denote origin.
Widok z Ostrowa był niesamowity.
The view from Ostrów was amazing.
In this context, 'Ostrowa' is used in the genitive case as part of the prepositional phrase indicating origin.