DICT.TW Dictionary Taiwan

 me·men·to mo·ri /məˈmɛntoˈmori, ˈmɔri/

 Me·men·to mo·ri  Lit., remember to die, i.e., that you must die; a warning to be prepared for death; an object, as a death's-head or a personal ornament, usually emblematic, used as a reminder of death.
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 memento mori
      n : a reminder (as a death's head) of your mortality