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tickler file

American

noun

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

Etymology

Origin of tickler file

An Americanism dating back to 1795–1805

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.