Webster's Revised Unabridged Dictionary · 1913

Insignia

Insignia , noun, plural

[Latin insigne, pl. insignia, from insignis distinguished by a mark; pref. in- in + signum a mark, sign. See Ensign, Sign.]

1.
Distinguishing marks of authority, office, or honor; badges; tokens; decorations; as, the insignia of royalty or of an order.
2.
Typical and characteristic marks or signs, by which anything is known or distinguished; as, the insignia of a trade.