A great deal of rubbish in skip (4)

I believe the answer is:

trip

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'skip' is the definition.
(thesaurus)

I don't understand how the remainder of the clue works.

(Other definitions for trip that I've seen before include "Journey for some purpose" , "Ride" , "holiday" , "Hallucinatory experience" , "a result of drug-taking" .)

I've seen this clue in The Times.

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