Bane of start of nauseous vomiting (7)

I believe the answer is:

nemesis

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'bane' is the definition.
(I know that bane can be written as nemesis)

'start of nauseous vomiting' is the wordplay.
'start of' indicates taking the first letters.
'vomiting' becomes 'emesis' (I can't explain this - if you can you should believe this answer much more).
The initial letter of 'nauseous' is 'n'.
'n'+'emesis'='NEMESIS'

'of' is the link.

Can you help me to learn more?

(Other definitions for nemesis that I've seen before include "Retribution personified" , "enemy" , "Nee Miss (anag.)" , "Goddess of revenge - seems in (anag)" , "Greek goddess - opponent who cannot be beaten" .)

I've seen this clue in The Telegraph.

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