Recollection (6)
I believe the answer is:
memory
'recollection' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for memory that I've seen before include "The ability to store things in mind, and to recall (6)" , "commemoration" , "Something recalled; part of computer" , "Power of retaining and recalling past experience" , "Power of recall" .)