Brief comment from person apprehended by a copper (6)

I believe the answer is:

apercu

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'brief comment' is the definition.
'apercu' can be an answer for 'comment' (I've seen this before). I am unsure of the 'brief' bit.

'person apprehended by a copper' is the wordplay.
'person' becomes 'per' (abbreviation).
'apprehended by' says to put letters next to each other.
'copper' becomes 'cu' (chemical symbol).
'per' put after 'a' is 'aper'.
'aper'+'cu'='APERCU'

'from' acts as a link.

Can you help me to learn more?

(Other definitions for apercu that I've seen before include "Precis, brief outline" , "Illuminating or entertaining point (from French)" , "Glimpse" , "Witty remark" , "Brief sketch, outline" .)

I've seen this clue in The Guardian.

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