Top Definition
The previous business day, exluding weekends, holidays, and vacation days.
Boss: Did you send me those reports?
Employee: Check the bottom of you mail folder, I sent them besterday!?!
by Alberto Weinsenstein December 23, 2010
The day before yesterday
I think I got concussed besterday
by Ulla Inga April 14, 2015

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.