Top Definition
This phrase is used to describe the kind of excellent day or occurrence that deserves a banner hung in a prominent place in the home, as if to mark a celebratory occasion.
"I got his phone number and then he also said he wants to meet up later too! Banner day!"
by Mega Huge May 20, 2014
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.