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Business attracting a lot of interest (5)

Ross

I believe the answer is:

usury

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'interest' is the definition.
(I know that usury is a interest)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for usury that I've seen before include "Loan sharking" , "Lending money at excessive rates of interest" , "Lending at high interest rates" , "Shylock's calling" , "Lending of money at exorbitant interest" .)

I've seen this clue in The Globe and Mail.
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