Crossword Genius

Had been picked up, one gathered (9)

Ross

I believe the answer is:

collected

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

I don't understand how the rest of the clue works.

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(Other definitions for collected that I've seen before include "composed" , "Gathered" , "Also cool and calm?" , "Came together" , "Brought together" .)

I've seen this clue in the Evening Standard.
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