Somehow hit road, or part of it (5)
I believe the answer is:
third
'part of it' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'somehow hit road' is the wordplay.
'somehow' is an anagram indicator.
'road' becomes 'rd' (abbreviation).
'hit' anagrammed gives 'thi'.
'thi'+'rd'='THIRD'
'or' acts as a link.
Can you help me to learn more?
(Other definitions for third that I've seen before include "Ruthless interrogation" , "Tertiary" , "Last of three" , "Bronze medal position" , "degree" .)