Come say 'hey' this weekend (plus a prop call)! souvenir /soo͞″və-nîr′, soo͞′və-nîr″/ • noun • That which serves as a reminder; a remembrancer; a memento; a keepsake. souvenir /soo͞″və-nîr′, soo͞′və-nîr″/ • noun • That which serves as a reminder; a remembrancer; a memento; a keepsake.