insignia

Etymology

From Latin īnsīgnia, nominative plural of īnsīgne (“emblem, token, symbol”). Doublet of ensign.

noun

1. A patch or other object that indicates a person's official or military rank, or membership in a group or organization.
   The little green men were clearly professional soldiers by their bearing, carried Russian weapons, and wore Russian combat fatigues, but they had no identifying insignia. Vladimir Putin originally denied they were Russian soldiers; that April, he confirmed they were. 18 March 2019, Steven Pifer, Five years after Crimea’s illegal annexation, the issue is no closer to resolution, The Center for International Security and Cooperation
2. A symbol or token of personal power, status, or office, or of an official body of government or jurisdiction.
3. (figurative) A mark or token by which anything is known.
   Rule 23: “The stress of love makes it hard to eat and sleep.” To these empirical laws we can add the various other insignia of love. 2006, P. Goodrich, The Laws of Love: A Brief Historical and Practical Manual, page 49

noun

1. plural of insignium
2. plural of insigne