A banner can have several meanings depending on the context. Here are the main definitions:

1. General Definition (Noun)

A banner is a long strip of cloth or other material bearing a slogan, design, or emblem, often used for advertising, protest, celebration, or identification.

Example:

A banner hung across the street to announce the festival.

2. Digital Context (Web Banner)

In digital media, a banner is a rectangular advertisement or graphic displayed on a website, usually linking to another webpage.

Example:

A promotional banner at the top of a homepage.