badge - definition and synonyms

noun [countable] 

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  1. 1
    British a small round object that fastens onto your clothes with a pin and usually has a picture or writing on it. The American word is button.
  2. 2
    a special piece of metal, cloth, or plastic, often with words or symbols on it, that you wear or carry with you to show your rank or official position

    a police badge

    Employees should wear their badges at all times in the building.

    1. a.
      a similar object that shows that you have achieved something

      a scout badge