memento
n. C1 Advanced US //mɪˈmɛntoʊ// UK //məmˈɛntəʊ// me·men·to
n. an object that you keep to remind you of a person or a special event.
n. an object kept as a reminder of a person or event. Often used in the plural to refer to a collection of such items.
He keeps a small stone as a memento of his trip.
The old photo frame was a memento of her childhood, reminding her of the house she grew up in.
The museum's collection of wartime letters serves as a powerful memento of the era's social upheaval, preserving the personal voices of those who lived through it.
Borrowed from Latin mementō (“remember”), imperative form of meminī (“I remember”).