Centripetal nurses work here! (7)

I believe the answer is:

inwards

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

I don't understand the rest of the clue.

(Other definitions for inwards that I've seen before include "Towards the inside" , "Towards the centre" , "umbles" , "Towards the core" , "Where self-analysis points" .)

I've seen this clue in the Sydney Morning Herald.

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