Crossword Genius

Flashed to accursed crook (10)

Ross

I believe the answer is:

coruscated

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'flashed' is the definition.
Although both the answer and definition are past participle verbs, I can't understand how one could define the other.

'to accursed crook' is the wordplay.
'crook' indicates anagramming the letters (a crooked or broken form of the letters).
'to'+'accursed'='toaccursed'
'toaccursed' anagrammed gives 'CORUSCATED'.

Can you help me to learn more?

(Another definition for coruscated that I've seen is " sparkled".)

I've seen this clue in the Sydney Morning Herald.
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