Crossword Genius

Shifty trader kept more satisfied outside rail terminal (8)

Ross

I believe the answer is:

smuggler

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

This could be a double definition.

'shifty trader' is the first definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?

'kept more satisfied outside rail terminal' is the second definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

Can you help me to learn more?

(Other definitions for smuggler that I've seen before include "One who illegally imports goods" , "Contrabandist" , "Illegal importer" , "Importer of goods without paying duties" , "He tries to evade customs barriers" .)

I've seen this clue in the Sydney Morning Herald.
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