The most common and most likely answer to this crossword clue is the 5 letter word RESAT
I've seen this crossword clue in Financial Times
R
E
S
A
T
More clues leading to the result RESAT
- Stunner turned up and took over
- Exam may once more be attempted initially in break
- Took again in about 24 hrs
- Had another go at a pass at a stunner having been rebuffed
- Withdrawn weapon was tested again
- Stunner pirouetted and struck a different pose
- Tried again to pass entire Saturday inside
- Tried to pass again on weekend day?
- Stunner from the East tried to get through again
- Stuck in sequence of voitures, a tailback, tried to pass again
Buddy explains!

The straight part
We know that "struck a different pose" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case struck a different pose = resat.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 RESAT mean?
RESAT verb- To take an examination a second time.