- memento⇄memento, noun, pl.-tosor-toes.
1. something serving as a reminder, warning, or remembrance.
Ex. These post cards are mementos of our trip abroad. This ring is a memento of an old friend.
2. (Archaic.) a reminder, warning, or hint as to - Memento⇄Memento, noun.
(in the Roman Catholic Church) either of two prayers beginning ""Memento"" (""Remember"") in the canon of the Mass, in which the living and the dead respectively are commemorated.