Bump or push roughly (6)
I believe the answer is:
jostle
I believe this is a double definition.
'bump' is the first definition.
(I've seen this in another clue)
'push roughly' is the second definition.
(I've seen this in another clue)
(Other definitions for jostle that I've seen before include "Hustle" , "press" , "Push and elbow roughly in a crowd" , "Bump and push (for position)" , "jockey" .)