Given a start (4)

I believe the answer is:

born

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'given a start' is the definition.
The definition and answer can be both related to thinking as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

This is the entire clue.

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(Other definitions for born that I've seen before include "Delivered (on one's birthday!)" , "Ne/nee" , "See 13" , "Brought into existence" , "Given birth to" .)

I've seen this clue in the Evening Standard.

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