Punch Card Definition

noun
A machine-readable card in which information is encoded as a pattern of punched holes, for interpretation by a data-processing machine.
Webster's New World

(computing) Such a card, the size of a US dollar bill, having 80 columns of 12 rows used in early mainframe computers.

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Other Word Forms of Punch Card

Noun

Singular:
punch card
Plural:
punch-cards

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punch card