(especially in the past) a small card with your name on it that you leave with somebody after, or instead of, a formal visit
a sign, such as an action or a piece of work, that identifies somebody or shows what they can do
Example:
- Bright, bold colours and shapes are his calling card.
- The floods were the calling card of climate change.
- The pair created the film as a calling card for a bigger project that they have planned.
a plastic card that you can use in some public phones instead of money
a card with a number on it that you use in order to pay to make a call from any phone. The cost of the call is charged to your account and you pay it later.