Combination of Lillee and Thomson, perhaps, with Marsh (9)

I believe the answer is:

quicksand

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'marsh' is the definition.
(thesaurus)

I can't explain the rest of the clue.

(Other definitions for quicksand that I've seen before include "Ground which sucks!" , "Treacherous situation that can trap and destroy" , "Treacherous wet area that swallows things up" , "Treacherous terrain" , "Treacherous situation (which sucks people and things down)" .)

I've seen this clue in The Hindu.

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