Crossword Genius

Very thin stationery (3,6)

Ross

I believe the answer is:

air letter

'very thin stationery' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for air letter that I've seen before include "Item of overseas post" , "Item of overseas mail" , "speedy delivery" .)

I've seen this clue in the Thinks.com.
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