Crossword Genius

Starr initially is not what Lennon, McCartney, or Harrison nominally is (5)

Ross

I believe the answer is:

saint

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'what lennon mccartney or harrison nominally is' is the definition.
I can't tell whether this defines the answer.

'starr initially is not' is the wordplay.
'initially' indicates taking the first letters.
'is not' becomes 'ain't' (non-standard version of 'isn't').
The initial letter of 'starr' is 's'.
's'+'aint'='SAINT'

Can you help me to learn more?

(Other definitions for saint that I've seen before include "Holy man" , "See 6" , "Very virtuous person" , "paragon!" , "Beatified person" .)

I've seen this clue in The Guardian.
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