Crossword Genius

Coins of a timid criminal -- no small change (12)

Ross

I believe the answer is:

modification

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'change' is the definition.
(I know that change can be written as modification)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for modification that I've seen before include "Change made" , "Adjustment" .)

I've seen this clue in The Telegraph.
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