The Collaborative International Dictionary of English v.0.48:

Retrospect \Re"tro*spect\, v. i. [L. retrospicere; retro back +
   specere, spectum, to look. See Spy, and cf. Expect.]
   To look backward; hence, to affect or concern what is past.
   [1913 Webster]

         It may be useful to retrospect to an early period. --A.
                                                  Hamilton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Retrospect \Re"tro*spect\, n.
   A looking back on things past; view or contemplation of the
   past. --Cowper.
   [1913 Webster]

         We may introduce a song without retrospect to the old
         comedy.                                  --Landor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

retrospect
    n 1: contemplation of things past; "in retrospect"
    v 1: look back upon (a period of time, sequence of events);
         remember; "she reviewed her achievements with pride" [syn:
         review, look back, retrospect]