in ‧ sig ‧ ni ‧ a /ɪnˈsɪɡniə/ BrE AmE noun ( plural insignia ) [countable]
[ Date: 1600-1700 ; Language: Latin ; Origin: plural of insigne 'mark, sign' , from signum ; ⇨ ↑ sign 1 ]
a ↑ badge or sign that shows what official or military rank someone has, or which group or organization they belong to ⇨ emblem :
the royal insignia
military insignia