This is the 9215th most frequent Russian word.
смоленской
"Smolenskoy" (смоленской) means "of or related to Smolensk," referring to the city or region in Russia.
Here, "Смоленской" is used as an adjective modifying "области" (region), in the genitive case, indicating possession or specification.
Я посетил Смоленской области на выходных.
I visited the Smolensk region over the weekend.
In this case, "Смоленской" is used as an adjective describing "типографии" (print house), in the dative case, indicating location.
Книга была издана в Смоленской типографии.
The book was published in the Smolensk print house.
Here, "Смоленской" acts as an attributive adjective describing "природы" (nature), in the genitive case, showing possession or association.