“Great” millionaire happy to save high-street bank (6)
I believe the answer is:
gatsby
'great millionaire' is the definition.
'gatsby' can be an answer for 'millionaire' (I have seen 'Novel millionaire' mean 'gatsby' so perhaps 'millionaire' could also mean 'gatsby'). I am not sure about the 'great' bit.
'happy to save high-street bank' is the wordplay.
'happy' becomes 'gaby' (I am not sure about this - if you are sure you should believe this answer much more).
'to save' indicates putting letters inside.
'high' indicates anagramming the letters (like drunk).
'bank' says to hollow out the word (remove centre letters) (I've seen 'banks' mean this (the sides or banks of the word)).
'street' with its middle taken out is 'st'.
'st' anagrammed gives 'ts'.
'gaby' placed around 'ts' is 'GATSBY'.
Can you help me to learn more?
(Other definitions for gatsby that I've seen before include "Great character in Fitzgerald novel" , "Scott Fitzgerald hero" , "F Scott Fitgerald wrote 'The Great ......'" , "Famous novel by F Scott Fitzgerald 'The Great . . . . . .'" , "great fictional character" .)