Crossword Genius

Vocal after consuming one alcoholic drink in opening (8)

Ross

I believe the answer is:

original

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'opening' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?

'vocal after consuming one alcoholic drink' is the wordplay.
'vocal' becomes 'oral' (I've seen this before).
'after consuming' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'alcoholic drink' becomes 'gin' (I've seen this before).
'i'+'gin'='igin'
'oral' going around 'igin' is 'ORIGINAL'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for original that I've seen before include "Archetype,master copy" , "Pristine; innovative" , "Eccentric" , "First; (an) odd character" , "Not derived or copied form something else" .)

I've seen this clue in The Hindu.
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