Roman kind of part of humanity (7)
I believe the answer is:
mankind
'humanity' is the definition.
(I know that humanity can be written as mankind)
'roman kind of part' is the wordplay.
'part' says the answer is hidden in the clue.
'MANKIND' is hidden in the letters of 'roman kind of'.
'of' is the link.
(Other definitions for mankind that I've seen before include "Humans collectively" , "People generally" , "Humanity" , "'One giant leap for - - '" , "people, in general" .)