Crossword Genius

Finish work and go to bed (6)

Ross

I believe the answer is:

retire

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'go to bed' is the definition.
(synonyms)

I cannot understand how the remainder of the clue works.

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(Other definitions for retire that I've seen before include "Give up working and go to bed" , "climb the stairs" , "Leave work; go back" , "Go to bed or quit work for good" , "Conclude employment or go to bed" .)

I've seen this clue in The Telegraph and The Sun.
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