Original: A badge is a device, patch, or accoutrement which is presented or displayed to indicate some feat of service, a special accomplishment, a symbol of authority granted by taking an oath (e.g., police and fire), a sign of legitimate employment or student status, or as a simple means of identification.
Simplified: A badge is a device, patch, or accoutrement which is given and/or can be displayed to indicate some feat of service. It can be for a special accomplishment, a symbol of authority granted by taking an oath (e.g., police and fire). It may also be a sign of legitimate employment or student status, or as a simple means of identification.