insignia

/IH0 N S IH1 G N IY0 AH0/
noun
  1. 1

    A patch or other object that indicates a person's official or military rank, or membership in a group or organization.

  2. 2

    A symbol or token of personal power, status, or office, or of an official body of government or jurisdiction.

  3. 3

    A mark or token by which anything is known.

Source: https://en.wiktionary.org/wiki/insignia