Crossword Genius

Outcome of a trial? (5)

Ross

I believe the answer is:

error

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'outcome of a trial?' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?

This is all the clue.

Can you help me to learn more?

(Other definitions for error that I've seen before include "Blunder or mistake" , "1 down" , "Bug" , "Howler" , "Slip, mistake" .)

I've seen this clue in the Evening Standard.
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