peekaboo card (English, noun)
expansion: peekaboo card (plural peekaboo cards)
Senses:
topics: computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
glosses: A kind of punch card that could be used to find records matching several categories by aligning cards for the records and retaining those where a hole could be seen all the way through the stack of cards.
tags: historical
Forms:
form: peekaboo cards
tags: plural