Symbol or title for Italian guy (6)

I believe the answer is:

signor

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'title for italian guy' is the definition.
I can't tell whether this defines the answer.

'symbol or' is the wordplay.
'symbol' becomes 'sign' (I've seen this before).
'sign'+'or'='SIGNOR'

Can you help me to learn more?

(Other definitions for signor that I've seen before include "Title of Italian man" , "Italian gentleman" , "Italian mister" , "Guy in Rome" , "Title of Italian-speaking man" .)

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

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