Pinback

Part of speech: noun, verb

Definitions

1. A fastener consisting of a round disc that attaches to clothing via a metal pin mechanism on the reverse side
2. An accessory used to convey messages or support causes, characterized by a design on the front and a pin for attachment
3. A type of decorative item that features a design on a disc and is secured to fabric through a pin mechanism that allows for easy attachment

Etymology: "Pinback" is a plain compound: "pin" joined to "back," the flat metal disc or fastener on the reverse of the badge that catches the cloth and holds the whole thing in place. The word describes the object by its mechanism rather than its message, so the badge is named for how it is worn, not for what it says. The compound makes sense once you picture the object itself. A pinback button has a front face carrying the design or slogan, and a pin on the back that passes through fabric and is secured by a clasp, giving it its name. The back piece is the part that does the holding, which is why the term stresses that feature over the printed front.

Synonyms: button, badge, emblem, insignia, pin