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Grass, coke and E smuggled by artist whose mum got framed? (7-6)

Ross

I believe the answer is:

whistle-blower

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'grass' is the definition.
(I've seen this before)

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(Other definitions for whistle-blower that I've seen before include "Person with inside information making public some illicit activity" , "Informer on illicit activities" , "One who exposes wrongdoing" , "Teller of tales to the authorities - referee?" , "One who informs on malpractice" .)

I've seen this clue in The Sunday Times.
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