Stand for bone-shaped biscuit, perhaps (5)

I believe the answer is:

treat

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'stand' is the definition.
(both can mean to provide with food)

I don't understand the remainder of the clue.

(Other definitions for treat that I've seen before include "Care for medically" , "could be a feast" , "pay for another" , "Cure" , "Medicate" .)

I've seen this clue in The Guardian.

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