This is the 6088th most frequent Russian word.
спортивном
"Sports" or "athletic" (adjective, related to sports).
Here 'спортивном' is used as an adjective modifying the noun 'магазине', describing that the store specializes in sports equipment.
Я встретил друга в спортивном магазине.
I met a friend in a sports store.
In this sentence, 'спортивном' functions as an adjective describing the noun 'костюме', indicating that the clothing is suitable or designed for sports.
Она была в спортивном костюме.
She was in sportswear.
Here, 'спортивном' serves as an adjective describing the noun 'стадионе', denoting that the stadium is related to sports activities.