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Trouble with argument about entry to hectic airport (8)

Ross

I believe the answer is:

heathrow

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'airport' is the definition.
(London airport)

'trouble with argument about entry to hectic' is the wordplay.
'trouble with' becomes 'hea' (I can't explain this - if you can you should believe this answer much more).
'argument' becomes 'row' (to row is to argue).
'about' says to put letters next to each other.
'entry' suggests taking the first letters (I've seen 'entry of' mean this).
The first letters of 'to hectic' is 'th'.
'row' after 'th' is 'throw'.
'hea'+'throw'='HEATHROW'

Can you help me to learn more?

(Other definitions for heathrow that I've seen before include "lots of movement through the air here" , "site for airport" , "London's main airport" , "London airport" , "London's busiest airport" .)

I've seen this clue in The Guardian.
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