Crossword Genius

A small amount of money lost in the gross (10)

Ross

I believe the answer is:

shoestring

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'a small amount of money' is the definition.
I can't judge whether this definition defines the answer.

'lost in the gross' is the wordplay.
'lost' indicates anagramming the letters.
'in'+'the'+'gross'='inthegross'
'inthegross' is an anagram of 'SHOESTRING'.

Can you help me to learn more?

(Other definitions for shoestring that I've seen before include "A minimum of money" , "Minimal amount of money" , "for securing a trainer?" , "Barely sufficient funds" , "Very little money" .)

I've seen this clue in The Hindu.
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