| 1. | an act or instance of calling out. |
| 2. | an order to report for emergency or special work, esp. at an unusual time or place. |
| 3. | a letter, number, or other device for identifying or calling attention to a particular part of an illustration. |
| 4. | a challenge to a duel. |

| call-out | |
noun | |
| a challenge to a fight or duel |