Crossword Genius

Devious wiretap traps Panama's top ecstasy/marijuana transporter (5,4)

Ross

I believe the answer is:

water pipe

I'm a little stuck... Click here to teach me more about this clue!

'transporter' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?

'devious wiretap traps panama's top ecstasymarijuana' is the wordplay.
I cannot quite see how this works, but
an anagram of 'wiretap' is 'waterpi' which is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Independent.
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