Let cop run amok showing signs of greed? (9)

I believe the answer is:

corpulent

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'let cop run amok showing signs of greed?' is the definition.
I can't tell whether this definition defines the answer.

'let cop run amok' is the wordplay.
'amok' indicates an anagram.
'let'+'cop'+'run'='letcoprun'
'letcoprun' with letters rearranged gives 'CORPULENT'.

Can you help me to learn more?

(Other definitions for corpulent that I've seen before include "bloated" , "Overweight" , "Big" , "Rotund, obese" , "Having a bulky body, fat" .)

I've seen this clue in The Telegraph.

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