Topless Italian has to tickle bottomless numskull (9)
I believe the answer is:
ignoramus
'numskull' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for ignoramus that I've seen before include "One who knows nothing" , "One lacking knowledge" , "One could be blissful it's said" , "Stupid person" , "one in a state of bliss?" .)