This is the 9034th most frequent Russian word.
розенко
"Розенко" is a surname in Russian and does not have a standalone meaning in English.
Here, 'Розенко' is used as a proper noun (a person's name), functioning as the subject of the sentence.
Розенко принес книгу.
Rozenko brought a book.
In this sentence, 'розенко' refers to 'rose', reflecting its use as a poetic or diminutive form of the word 'роза' (rose), describing its aesthetic quality.
У розенко красивая обложка.
The rose has a beautiful cover.
Again, 'розенко' is used as a diminutive form of 'rose', showing its location and the observer's perspective.