Badge n. : A distinctive mark, token, sign, or cognizance, worn on the person; as, the badge of a society; the badge of a policeman.

Badge n. : Something characteristic; a mark; a token.

Badge n. : A carved ornament on the stern of a vessel, containing a window or the representation of one.

Badge v. t. : To mark or distinguish with a badge.

Example:
Where can i get a Badge for my protection dog?

Taxonomy
Badge, free encyclopedia, Case badges, name badges, patches, collectible, rank, Military badges of the United States, search, Unsourced, Port Authority of New York and New Jersey Police Department, service, accomplishment, symbol, oath, police, fire, legitimate employment.

Defination from the web:
badge. A badge is a device, patch, or accoutrement which is presented or displayed to ... The BBC children's programme Blue Peter also awards its own "Blue Peter badge" to members of the public who appear on the show. ...