Sign in to one's place of business by use of a magnetic card, as in I told him I'd card in for him if he was late tomorrow. Similarly,
card out means to sign out of one's place of business, as in I want to sneak out early, so could you please card out for me at the end of the day? This term arose in the 1940s with the invention of automated check-in systems.
card in
| Idioms: card in |
| Shopping: card in |
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 | Who are the Cards? |
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 | Idioms. The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Company. All rights reserved. Read more |
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- audio board (technology)
- audio card (technology)
- security card (technology)
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- sound board (technology)
- aperture card
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