City editor has not moved during Monday (8)
I believe the answer is:
hamilton
'during monday' is the definition.
I can't judge whether this defines the answer.
'city editor has not moved' is the wordplay.
'city editor' becomes 'hamil' (I can't explain this - if you can you should give a lot more credence to this answer).
'has' is a charade indicator (letters next to each other).
'moved' indicates an anagram.
'not' is an anagram of 'ton'.
'hamil'+'ton'='HAMILTON'
Can you help me to learn more?
(Other definitions for hamilton that I've seen before include "Lady mistress of Napoleon" , "Lady . . . . . . . . was Lord Nelson's lover" , "Emma -, Nelson's mistress" , "F1 champion" , "Motorist" .)