- To prepare for exercise or performance by practicing beforehand. 2. To make someone enthusiastic or excited. 3. To become friendlier or more receptive toward someone. 4. To reach a temperature high enough for efficient operation. 5. To reheat food. 6. To approach a state of violence or confrontation.
Examples:
- It's important to warm up before you play any sport.
Origin: Sense 1: late 1800s