Wind up in dump, tackling debt on retirement (8)

I believe the answer is:

dissolve

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

I don't understand the remainder of the clue.

(Other definitions for dissolve that I've seen before include "Deliquesce" , "A smooth change from one film image to another" , "Liquify, melt" , "Annul (a marriage, etc)" , "Dissipate in liquid" .)

I've seen this clue in The Hindu.

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