A memorial plaque is read as remembrance, a moment or person you do not want forgotten. The words on it are taken as what your mind wants to honour.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.