Crossword Genius

Not a straightforward sort of flight (6)

Ross

I believe the answer is:

spiral

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'flight' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for spiral that I've seen before include "Scandalise" , "New Zealand native" , "Corkscrew shape (6)." , "Sir, pal winds in continuous loops" , "Winding curve" .)

I've seen this clue in The Globe and Mail.
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