index card

American  

noun

1. a card, often relatively small, as 3 × 5 inches (7.6 × 12.7 centimeters), used in noting or recording information and usually filed in an index.

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Etymology

Origin of index card

First recorded in 1925–30

Example Sentences

And they had an index card, recently discovered by one of Garcetti’s investigators in the office files, that listed Butler as a D.A. informant.

From Los Angeles Times

This huge life shift prompted him to face down his own lack of financial planning and eventually help demystify the topic for others with his book, The Index Card.

From Slate

I wrote this on an index card and kept it in my backpack throughout college to constantly remind me of the goal because being an environmentalist can be discouraging, given the current climate.

From Los Angeles Times

Lincoln Riley’s game plan probably couldn’t fit on anything more than an index card.

From Los Angeles Times

Sitting among dozens of football players in the Rams locker room at SoFi Stadium, the quarterback explained why he had ripped an index card with the word “Black” on it.

From Los Angeles Times