This is the 9680th most frequent Russian word.
черничный
"Черничный" means "blueberry" or "made of blueberry."
Here, 'черничный' serves as an adjective modifying 'пирог,' describing the type of pie, indicating it is made with blueberries.
Черничный пирог был невероятно вкусным.
The blueberry pie was incredibly delicious.
In this sentence, 'черничный' again functions as an adjective, defining the type of yogurt — blueberry.
Я купила черничный йогурт на завтрак.
I bought blueberry yogurt for breakfast.
Here, 'черничный' describes the lemonade, indicating it has a blueberry flavor or contains blueberries.