1. (n.) A record of something which it is desired to remember; a note to help the memory.

2. (n.) A brief or informal note in writing of some transaction, or an outline of an intended instrument; an instrument drawn up in a brief and compendious form.

adversaria aide-memoire annotation announcement chit cue diary directive dispatch docket entry epistle flapper footnote hint item jogger jotting letter marginal note marginalia memo memoir memorial message minute minutes missive notation note notice prompt prompter prompting record register registry remembrance remembrancer reminder scholia scholium tickler