The most common and most likely answer to this crossword clue is the 5 letter word GLINT
I've seen this crossword clue in The Times
G
L
I
N
T
More clues leading to the result GLINT
- Flash grand, something that collects in pocket
- Light top for girl dressing
- Flash German fabric
- Flash Gordon’s principal dressing material
- Strange winkless twinkling
- Flash Gordon’s first material for dressing
- Flash from top of golden material
- Sports car bringing 22 back in a flash
- Flash of brilliance
- Grand bits of fluff giving flash
Buddy explains!

The straight part
We know that "Flash" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case flash = glint.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 GLINT mean?
GLINT noun- A short flash of light.
- To flash or gleam briefly.
- To glance; to peep forth, as a flower from the bud; to glitter.
- To cause to flash or gleam; to reflect.
- To dry; to wither.
- (of a blade) Not sharp; dull.