Definitions for punch card
Random House Webster's College Dictionary
a rectangular card on which data is stored in the form of a pattern of small holes.
Origin of punch card:
punched card, punch card, Hollerith card(noun)
a card on which data can be recorded in the form of punched holes
A card that can have holes or notches cut in it, especially one for storing data, that can be sorted according to combinations of holes present or absent.
Such a card, the size of a US dollar bill, having 80 columns of 12 rows used in early mainframe computers.