Crossword Genius

For whom Imogen compiles, ensconced here? (6)

Ross

I believe the answer is:

settee

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'for whom imogen compiles ensconced here?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

This is all the clue.

Can you help me to learn more?

(Other definitions for settee that I've seen before include "Chesterfield" , "Small sofa" , "Multiple seat" , "Comfortable seat for two or more" , "Comfy sofa" .)

I've seen this clue in The Guardian.
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