Literal meaning (a flag or sign):
* The victorious team proudly carried their banner high above the stadium.
* A large banner advertising the upcoming concert hung from the building's facade.
Figurative meaning (representing something important):
* The new product launch was a banner year for the company.
* Her graduation from college was a banner moment in her life.
* The event was a banner success, with record attendance and high spirits.
Other uses:
* They created a banner advertisement for their new website.
* The website uses a banner image to highlight its most important feature.
* The software developer added a banner to the interface to announce a new update.
The specific meaning of "banner" will depend on the context of the sentence.