Set routine to enjoy, being a cat (6)

I believe the answer is:

groove

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'set routine' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for groove that I've seen before include "Long narrow channel in surface of hard material" , "Cut channel - set routine" , "Cutting" , "Spiral track followed by a gramophone needle" , "to be in this settled routine?" .)

I've seen this clue in The Independent.

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