The most common and most likely answer to this crossword clue is the 9 letter word SIGNORINA
I've seen this crossword clue in The Times
S
I
G
N
O
R
I
N
A
More clues leading to the result SIGNORINA
- Miss warning put out on air
- Miss Roman cutting short boring appeal
- Men in area go after token girl abroad
- Son takin’ no notice of a young Italian woman
- Foreign miss by design or inadvertently.
- Miss cue on air — sorry!
- Initial broadcast on air for Italian youth
- Son mostly paying no attention to a foreign girl
- Italian girl dancing on air after clue
- Foreign girl who drops in after marriage
Buddy explains!

The straight part
We know that "Miss" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case miss = signorina.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 SIGNORINA mean?
SIGNORINA noun- A courtesy title for an unmarried woman of Italian origin.
- Maitake, hen of the woods (mushroom)