In Among Us, the button used to report a discovered dead body is called Report.
When a living Crewmate or Impostor finds a body, selecting Report starts an emergency meeting. The body disappears from the map, and all surviving players are brought together to discuss what happened. They can then vote to eject a player or skip the vote.
Report is different from the Emergency Meeting button. The Emergency Meeting button can call a meeting without a body, although some critical sabotages temporarily prevent players from using it. A player must also be alive to report a body; ghosts cannot trigger meetings this way.
The reporting mechanic is central to Among Us because it turns exploration into social deduction. Players use the location of the body, recent sightings, task routes, and timing to decide whether someone may be an Impostor.