This is the 6995th most frequent Russian word.
астраханский
Astrakhansky: Related to Astrakhan, a city or region in Russia.
Here, 'астраханский' is an adjective modifying 'арбуз' (watermelon), indicating origin or association with Astrakhan, a region in Russia.
Астраханский арбуз считается самым вкусным.
The Astrakhan watermelon is considered the tastiest.
In this sentence, 'астраханский' is used as an adjective modifying 'Кремль' (Kremlin), again denoting association with Astrakhan.
Мы посетили Астраханский Кремль во время отпуска.
We visited the Astrakhan Kremlin during our vacation.
Here, 'астраханской' is the adjective derived from 'астраханский' in its feminine form to agree with 'улице' (street), signifying the street named 'Astrakhanskaya.'