Meaning of peekaboo card | Babel Free
Definitions
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.
historical
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.