This is the 17911th most frequent Russian word.
утреннюю
"Morning" (adjective, feminine accusative form).
The word 'утреннюю' is used here as an adjective in feminine singular accusative form to describe the noun 'газету' (newspaper), indicating it is a newspaper associated with the morning.
Сегодня я купил утреннюю газету.
Today I bought the morning newspaper.
The word 'утреннюю' functions as an adjective describing 'тренировку' (workout), conveying its relation to the morning timeframe.
Мы обсуждали утреннюю тренировку.
We discussed the morning workout.
Here, 'утреннюю' modifies the noun 'еду' (meal), signaling it is a meal specifically meant for the morning.