Ran into road gripping hammer, naked (6)
I believe the answer is:
rammed
'ran' is the definition.
('ram' can be a synonym of 'run')
'road gripping hammer naked' is the wordplay.
'road' becomes 'rd' (abbreviation for road).
'gripping' is an insertion indicator (inserted letters are gripped).
'naked' means to look at the middle letters (outside letters removed so centre is unclothed).
The middle of 'hammer' is 'amme'.
'rd' going around 'amme' is 'RAMMED'.
'into' acts as a link.
(Other definitions for rammed that I've seen before include "Hammered" , "Forced (into place)" , "Struck forcibly" , "Forcefully crashed into" , "Bashed or drove into" .)