Spelled out, 'No more, Norma Jean!' (6)
I believe the answer is:
monroe
'spelled' is the definition.
The definition and answer are not the same part of speech.
'out no more norma jean' is the wordplay.
'out' indicates an anagram.
'more' becomes 'm'.
'norma jean' becomes 'roe' (I can't justify this - if you can you should give a lot more credence to this answer).
'no'+'m'='nom'
'nom' is an anagram of 'mon'.
'mon'+'roe'='MONROE'
Can you help me to learn more?
(Other definitions for monroe that I've seen before include "Marilyn . . . . . ., tragic Hollywood icon" , "President < and film star" , "Marilyn ___ , film icon" , "No more the old blond film start" , "See 3" .)