The most common and most likely answer to this crossword clue is the 7 letter word SMASHER
I've seen this crossword clue in The Daily Telegraph
S
M
A
S
H
E
R
More clues leading to the result SMASHER
- Sergeant major hears about outstanding person
- Buster‘s dish
- Singular flirt, one of dazzling charm
- Head of set on two US TV shows is attractive person
- The girl adopted by mainly clever and dazzling type
- Person who breaks dish
- Mum’s graced with singular woman’s beauty
- The woman, redhead, retaining mother’s beauty
- Son, a dandy and one with great charm
- Magic performer, big hitter
Buddy explains!

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 SMASHER mean?
SMASHER noun- Something that, or someone who, smashes.
- An attractive person (see also smashing).
- Anything very large or extraordinary; a whopper.
- One who passes counterfeit coins.
- (lang) The counterfeit money itself.