The most common and most likely answer to this crossword clue is the 9 letter word BRITANNIA
I've seen this crossword clue in The Times
B
R
I
T
A
N
N
I
A
More clues leading to the result BRITANNIA
- National symbol? Scots own up after it’s found in refuse
- Beaten up in Rabat in old Roman province
- Rain a bit? It’s torrential around northern Roman province
- Did she succeed where Canute failed?
- Overseas ruler making figure of 8s
- National figure dressed up in a tin bra
- Figure on coins being from these shores?
- Female that follows rule and sits on money?
- Brian ain’t fussed about woman being nation’s figurehead
- Helmeted woman’s time in Bahrain, travelling without husband
Buddy explains!
The straight part
We know that "Helmeted woman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case helmeted woman = britannia.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.