tickler file

American  

noun

1. a file consisting of memoranda, notices, electronic signals, or the like that serves to remind the user of matters that must be attended to.

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Etymology

Origin of tickler file

An Americanism dating back to 1795–1805

Example Sentences

And put this in your tickler file: The clothing room has its greatest need in the fall.

From Washington Post

Allen remembered a tool from his travel-agent days, the tickler file.

From Time

It also allows me to use e-mail as a tickler file.

From Inc

It turns out that the file a secretary keeps to remind her boss to do certain things at certain times is called a tickler file.

From Project Gutenberg

Besides getting paperwork off the desk, the tickler file also removed a source of worry: Once something was filed there, you knew you’d be reminded to deal with it on the appropriate day.

From Time