An emblem of honor worn on one's clothing
Something visible or evident that gives grounds for believing in the existence or presence of something else
A device worn as evidence
He showed his badge, inches from the man's face.
Dean showed his badge and after determining Fred was unhurt, returned to the bar.
Dean found the motel without difficulty and with the use of his police badge, he obtained access to the empty room.
All three were practised by the same artists, and it was not until a later period that each became the badge of a school.
You must have been fighting bullshit like this since the day you first pinned a badge on your shirt.