Relatively interesting news about some zephyrs (7)

I believe the answer is:

nephews

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'zephyrs' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how they can define each other.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for nephews that I've seen before include "Male relatives" , "Male kin" , "Kinsmen" .)

I've seen this clue in the Evening Standard.

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