What is Banner?

Legal Definition
A banner is a flag or other piece of cloth bearing a symbol, logo, slogan or other message. A flag whose design is the same as the shield in a coat of arms (but usually in a square or rectangular shape) is called a banner of arms.

Banner-making is an ancient craft. Church banners commonly portray the saint to whom the church is dedicated.

The word derives from French word "bannière" and late Latin bandum, a cloth out of which a flag is made (Latin: banderia, Italian: bandiera, Portuguese: bandeira, Spanish: bandera). The German language developed the word to mean an official edict or proclamation and since such written orders often prohibited some form of human activity, bandum assumed the meaning of a ban, control, interdict or excommunication. Banns has the same origin meaning an official proclamation, and abandon means to change loyalty or disobey orders, semantically "to leave the cloth or flag".
-- Wikipedia
Legal Definition
An electronic ad that is hot linked. The graphics are at the top or bottom of the page. It is 468 pixels wide and 60 pixels high. It is about 15 kilobytes of memory size.