Definition of "keypunch" []

• A keyboard machine that is used to punch holes in cards or tapes for data-processing systems. (noun)
• To process on or use such a keyboard machine. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Up until that time all changes made to the immense data base that we maintained on personnel and equipment was done via 'keypunch' cards."
• "In the 1988 Democratic primary in Delaware, a keypunch error gave Samuel Beard 2,800 votes more than he received in a race against incumbent Lt. Gov."
• "The Senate still files its campaign finance reports on paper (!), forcing the FEC to re-keypunch their data and delaying vital disclosure of who is funding their campaigns by more months."