a flag or banner, as a military or naval standard used to indicate nationality.

a badge of office or authority, as heraldic arms.

a sign, token, or emblem

the dove, an ensign of peace.

U.S. Navy and Coast Guard . the lowest commissioned officer, ranking next below a lieutenant, junior grade, and equal to a second lieutenant in the Army.

Archaic . standard-bearer ( def. 1 ) .

noun

banderole , banner , colors , emblem , gonfalon , insignia , pennant , standard , streamer , symbol , banneret , color , jack , oriflamme , pennon , flag , officer , rank , sign , title