What the foreigner wanting airmail stationery asked for? (8)
I believe the answer is:
flypaper
'for?' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for flypaper that I've seen before include "for hanging being used for killing" , "Sticky strip that catches small insects" , "Sticky trap for bluebottles etc" , "Bluebottle catcher" , "one collecting insects" .)