The most common and most likely answer to this crossword clue is the 6 letter word SOARED
I've seen this crossword clue in The Guardian
S
O
A
R
E
D
More clues leading to the result SOARED
Buddy explains!

The straight part
We know that "rose" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rose = soared.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SOARED mean?
SOARED verb- To fly high with little effort, like a bird.
- To mount upward on wings, or as on wings.
- To remain aloft by means of a glider or other unpowered aircraft.
- To rise, especially rapidly or unusually high.
- To rise in thought, spirits, or imagination; to be exalted in mood.