Located like a small figure between large ones (3)

I believe the answer is:

mid

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'located' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?

I can't explain the remainder of the clue.

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(Other definitions for mid that I've seen before include "Prefix meaning centre" , "Denote the centre point" , "Dim sort of prefix" , "Of the central part" .)

I've seen this clue in the Evening Standard.

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