BRIAN: I thought there was gonna be coffee, too.
ZACH: Dude, can you chill out about your freaking elevenses ’til we get this song straightened out?
Informal British for a short break for light refreshments, served in the late morning, around 11 am. Known in other parts of the world as morning tea, coffee break, or morning snack. Popular British children’s books such as Winnie-the-Pooh and Paddington Bear have made the word reasonably well known.
The Annotated Gilmore Girls 