One may kowtow and retreat (5)

I believe the answer is:

bower

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'retreat' is the definition.
(I have seen 'Shady retreat' mean 'bower' so perhaps 'retreat' could also mean 'bower')

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for bower that I've seen before include "sanctuary" , "Shady shelter" , "One who shows respect" , "shady area" , "Leafy shelter" .)

I've seen this clue in The Daily Express.

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