Jolt (4)
'jolt' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bump that I've seen before include "Collide with force or violence" , "Lump caused by a blow" , "Evidence of pregnancy - knock (into)" , "Bash into" , "Hit" .)
'jolt' is the definition.
(I know that jolt can be written as jar)
This is the entire clue.
(Other definitions for jar that I've seen before include "Grate" , "Container; be incongruous" , "Cylindrical container as for jam" , "drink" , "Shock; container" .)