Barge into (3)
I believe the answer is:
ram
'barge into' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ram that I've seen before include "Animal to batter" , "Deliberately collide with" , "Prepare to raid" , "'Computer memory, initially (3)'" , "Computers need it to operate" .)