The most common and most likely answer to this crossword clue is the 7 letter word TOWERED
I've seen this crossword clue in Independent
T
O
W
E
R
E
D
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 = towered.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 TOWERED mean?
TOWERED verb- To be very tall.
- To be high or lofty; to soar.
- To soar into.
- Equipped with a tower.