noun

• (obsolete, thieves' cant) A brand on the hand of a thief, etc.
  "He has got his badge, and piked."
• (nautical) A carved ornament on the stern of a vessel, containing a window or the representation of one.
• (heraldry) A distinctive mark worn by servants, retainers, and followers of royalty or nobility, who, being beneath the rank of gentlemen, have no right to armorial bearings.
• (graphical user interface) A small overlay on an icon that shows additional information about that item, such as the number of new alerts or messages.

verb

• (transitive) To mark or distinguish with a badge.
  "The television was badged as ‘GE’, but wasn’t made by them."
• (transitive) To show a badge to.
  "He calmed down a lot when the policeman badged him."
• (ambitransitive) To enter a restricted area by showing one’s badge.
  "Worden and James walk […] to the […] Courthouse […], where they badge their way past sheriff’s deputies and take the elevator to the third floor."