/ ɪnˈsɪgniə; NAmE / noun
[ U+sing./pl. v . ] the symbol, badge or sign that shows sb's rank or that they are a member of a group or an organization :
the royal insignia
His uniform bore the insignia of a captain.
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WORD ORIGIN
mid 17th cent.: from Latin , plural of insigne sign, badge of office, neuter of insignis distinguished (as if by a mark), from in- towards + signum sign.