столичной

столичной

"Столичной" means "of the capital" or "capital-city-related."

Here, 'столичной' is an adjective modifying 'части' (part), describing it as related to the central/capital aspect of the city.

Я часто гуляю в столичной части города.

I often walk in the central part of the city.

In this example, 'столичной' relates to 'жизни' (life), indicating the metropolitan or urban lifestyle characteristic of a capital city.

Многие обожают вкус столичной жизни.

Many adore the taste of city life.

Here, 'столичной' modifies 'газете' (newspaper), signifying that the newspaper is associated both content-wise and contextually with the capital or central region.

В столичной газете появилась интересная статья.

An interesting article appeared in the metropolitan newspaper.