The Collaborative International Dictionary of English v.0.48:

Recollection \Rec`ol*lec"tion\ (r?k`?l*l?k"sh?n), n. [Cf. F.
   r['e]collection.]
   1. The act of recollecting, or recalling to the memory; the
      operation by which objects are recalled to the memory, or
      ideas revived in the mind; reminiscence; remembrance.
      [1913 Webster]

   2. The power of recalling ideas to the mind, or the period
      within which things can be recollected; remembrance;
      memory; as, an event within my recollection.
      [1913 Webster]

   3. That which is recollected; something called to mind;
      reminiscence. "One of his earliest recollections."
      --Macaulay.
      [1913 Webster]

   4. The act or practice of collecting or concentrating the
      mind; concentration; self-control. [Archaic]
      [1913 Webster]

            From such an education Charles contracted habits of
            gravity and recollection.             --Robertson.
      [1913 Webster]

   Syn: Reminiscence; remembrance. See Memory.
        [1913 Webster]

WordNet (r) 3.0 (2006):

recollection
    n 1: the ability to recall past occurrences [syn: remembrance,
         recollection, anamnesis]
    2: the process of remembering (especially the process of
       recovering information by mental effort); "he has total
       recall of the episode" [syn: recall, recollection,
       reminiscence]
    3: something recalled to the mind

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "recollection":
   Mnemosyne, affect memory, anamnesis, anterograde memory, atavism,
   collective memory, commitment to memory, computer memory,
   disk memory, drum memory, emotional response, engram,
   exercise of memory, flashback, hindsight, impression,
   information storage, kinesthetic memory, learning by heart,
   looking back, memoir, memorization, memorizing, memory,
   memory bank, memory circuit, memory trace, mind, mneme,
   race memory, recall, recalling, recollecting, reconsideration,
   reexperiencing, reflection, reliving, remembering, remembrance,
   reminiscence, retrospect, retrospection, review, revival, rote,
   rote memory, screen memory, skill, souvenir, study, tape memory,
   verbal response, visual memory, youth