Comfortable retirement place (3)

I believe the answer is:

bed

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'retirement place' is the definition.
(I've seen this in another clue)

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

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(Other definitions for bed that I've seen before include "Bottom of the sea or river" , "Sleeping place" , "Firmly settle" , "Plot in which plants are growing" , "For sleep and flowers" .)

I've seen this clue in the Evening Standard.

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