'Souvenir' definitions:

Definition of 'souvenir'

From: WordNet
noun
Something of sentimental value [syn: keepsake, souvenir, token, relic]
noun
A reminder of past events [syn: memento, souvenir]

Definition of 'Souvenir'

From: GCIDE
  • Souvenir \Sou`ve*nir\ (? or ?), n. [F., fr. souvenir to remember, fr. L. subvenire to come up, come to mind; sub under + venire to come, akin to E. come. See Come, and cf. Subvention.] That which serves as a reminder; a remembrancer; a memento; a keepsake. [1913 Webster]

Synonyms of 'souvenir'

From: Moby Thesaurus