This is the 16418th most frequent Russian word.
розовый
Pink.
In this sentence, 'розовый' is used as an adjective to describe the color of the sweater being pink.
Я купил розовый свитер.
I bought a pink sweater.
Here, 'розовый' is used metaphorically to signify something idealistic or overly optimistic.
Её мечта казалась розовой, но реальность была иной.
Her dream seemed rosy, but reality was different.
In this example, 'розовый' again serves as an adjective describing the color of the flower.