aide-mémoire

noun

aide-mé·​moire ˌād-mām-ˈwär 

plural aide-mémoire

1

: an aid to the memory

especially : a mnemonic device

2

: a written summary or outline of important items of a proposed agreement or diplomatic communication

Word History

Etymology

French, from aider to aid + mémoire memory

First Known Use

1836, in the meaning defined at sense 1