'look back' definitions:

Definition of 'look back'

From: WordNet
verb
Look towards one's back; "don't look back while you walk" [syn: look back, look backward]
verb
Look back upon (a period of time, sequence of events); remember; "she reviewed her achievements with pride" [syn: review, look back, retrospect]

Synonyms of 'look back'

From: Moby Thesaurus