Crossword Genius

Virgin, say, feeling on edge (7)

Ross

I believe the answer is:

airline

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'edge' is the definition.
(thesaurus)

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

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(Other definitions for airline that I've seen before include "BA, say" , "Qantas, for example" , "SAS perhaps" , "It creates inflation" , "Business taking off" .)

I've seen this clue in The Independent.
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