Domain of a nobleman with a lot to do (7)
I believe the answer is:
dukedom
'domain' is the definition.
(I know that dukedom is a type of domain)
'a nobleman with a lot to do' is the wordplay.
'a nobleman with' becomes 'duke' (I can't explain this - if you can you should give a lot more credence to this answer).
'a lot' becomes 'm'.
'to' says to put letters next to each other (I've seen this in other clues).
'm' after 'do' is 'dom'.
'duke'+'dom'='DUKEDOM'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for dukedom that I've seen before include "Highest title of aristocracy" , "Title or lands of high ranking nobleman" , "Duchy" , "Top peerage rank" , "Wellington's rank" .)