card
1. card
A thick piece of paper or plastic cut out in a fixed size and form, to prove or record something.
2. card
A piece of paper on which an image, decoration, message, etc., is printed, to celebrate a special day or greet someone.
3. card
A piece of paper used in arrangement, calculation, etc., of data, by recording a certain content on it.
4. card
A small and thick piece of paper used in a card game.
5. solution; key
A critical method or means used to solve a certain issue.
6. card
A rectangular piece of plastic that enables one to pay for goods or services right away or after a certain period of time.
7. card
In a computer, a regular-sized plate containing electronic data.
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