Jog the memory of (6)
I believe the answer is:
remind
'jog the memory of' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for remind that I've seen before include "Warn" , "Cause someone to remember" , "Jog one's memory" , "Jog memory, cause to think of" , "Prompt; cue" .)