reminder

/rɪˈmaɪndər/
noun
  1. Something that helps you remember something you need to do or think about.
    • I set a reminder on my phone to call the dentist.
    • The sticky note on the fridge was a reminder to buy milk.
    • She sent me a gentle reminder about the meeting tomorrow.
  2. A person or thing that makes you think of someone or something from the past.
    • That old song is a reminder of our summer vacation.
    • Seeing her was a painful reminder of what I had lost.
    • The photograph served as a reminder of happier times.
What does "reminder" mean? | whatsthatwordmean | whatsthatwordmean