Such coinage, notionally, makes some a bit neurotic (4)

I believe the answer is:

euro

I'm a little stuck... Click here to teach me more about this clue!

'such coinage notionally' is the definition.
I can't tell whether this definition defines the answer.

'some a bit neurotic' is the wordplay.
'some a bit' indicates a hidden word (I've seen 'bit of' mean this).
'EURO' is hidden within 'neurotic'.

'makes' is the link.

Can you help me to learn more?

(Other definitions for euro that I've seen before include "jumper" , "Major currency" , "Cash" , "Currency of Germany" , "Currency of Austria" .)

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