Passenger vessel that carries trash? (5)

I believe the answer is:

liner

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

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

(Other definitions for liner that I've seen before include "Large passenger-ship" , "that's put in bin" , "Cruise ship" , "Cosmetic; fine paintbrush" , "QE2, perhaps" .)

I've seen this clue in The Sun.

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