badge 
(băj)
(băj)n.
1.
a. A device or emblem worn as an insignia of rank, office, or membership in an organization.
b. An emblem given as an award or honor.
2. A characteristic mark or indicative trait: “Indifference to what others think is ... the badge of the aristocrat” (Elspeth Huxley).
[Middle English bagge; akin to Anglo-Norman bage, of unknown origin.]
badge v.