/ ˈmemwɑː(r); NAmE / noun
1.
memoirs [ pl. ] an account written by sb, especially sb famous, about their life and experiences
2.
[ C ] ( formal ) a written account of sb's life, a place, or an event, written by sb who knows it well
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WORD ORIGIN
late 15th cent. (denoting a memorandum or record): from French mémoire (masculine), a special use of mémoire (feminine) memory.