Crossword Genius

Call Bob no last-born idiot (5)

Ross

I believe the answer is:

dubbo

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'call bob no last-born idiot' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'call bob no last' is the wordplay.
'call' becomes 'dub' (both can mean to name).
'last' says to take the final letters.
The final letters of 'bob no' are 'bo'.
'dub'+'bo'='DUBBO'

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