Crossword Genius

Savvy about wine (6)

Ross

I believe the answer is:

report

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'savvy' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'about wine' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'wine' becomes 'port' (port wine is a kind of wine).
're'+'port'='REPORT'

Can you help me to learn more?

(Other definitions for report that I've seen before include "'Description, account (6)'" , "Announce; gunshot" , "Explosion" , "Make a complaint about (someone)" , "Narrative given by porter" .)

I've seen this clue in the Sydney Morning Herald.
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