COCKADE
cockade
(noun) an ornament (such as a knot of ribbon or a rosette) usually worn on the hat
Source: WordNet® 3.1
Etymology
Noun
cockade (plural cockades)
A rosette or knot of ribbon worn in a hat, especially as an office or party badge.
(aviation) An emblem of concentric circles of different colours, identifying the country to which an aircraft belongs.
Synonym: roundel
Source: Wiktionary
Cock*ade", n. Etym: [F. cocarble, fr. coquard vain, OF. coquart, fr.
coq cock, prob. of imitative origin. The ornament is so named from
its resemblance to the crest of a cock. Cf. Coquette.]
Definition: A badge, usually in the form of a rosette, or knot, and
generally worn upon the hat; -- used as an indication of military or
naval service, or party allegiance, and in England as a part of the
livery to indicate that the wearer is the servant of a military or
naval officer.
Seduced by military liveries and cockades. Burke.
Source: Webster’s Unabridged Dictionary 1913 Edition