Lies in the manner of slouches (7)

I believe the answer is:

sprawls

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'lies' is the definition.
(sprawling is a kind of liing)

I don't understand the rest of the clue.

(Other definitions for sprawls that I've seen before include "untidy spreads" , "lies awkwardly" , "Spreads untidily" .)

I've seen this clue in the Evening Standard.

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