Crossword Genius

Crime boss seldom far from the gutter? (7)

Ross

I believe the answer is:

kingpin

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

'crime boss' is the definition.
'kingpin' can be an answer for 'boss' (thesaurus). I am not certain of the 'crime' bit.

'seldom far from the gutter?' is the wordplay.
I cannot really understand how this works, but
'from' could be 'in' (I've seen this in other clues) and 'in' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for kingpin that I've seen before include "25' [TOP BANANA]" , "first to be hit by a strike?" , "Most important member of organisation" , "person with vital role" , "Crucial person in organisation" .)

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