Crossword Genius

One identifying secret agent's features (3)

Ross

I believe the answer is:

tag

'one identifying' is the definition.
(a tag or label identifies something)

'secret agent's features' is the wordplay.
'features' indicates a hidden word (I've seen 'featuring' mean this).
'TAG' is hidden within 'secret agents'.

(Other definitions for tag that I've seen before include "Children's chasing game" , "Tie-on label" , "dog" , "day in Berlin" , "Name" .)

I've seen this clue in The Times.
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