Top definition
an entrance that no one really knows about, an un recognised entrance
The cops came in the front so we cheesed it out the postern.
by Jon Provance December 03, 2006
Get the merch
Get the postern neck gaiter and mug.
Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
Get the mug
Get a Leave Britney Alone mug for your coworker Paul.
2
a former employee made redundant by an organisation who is now doing work for free for that organisation, usually in the hope of being rehired when the economy improves.
She's trying to find a new direction, but in the mean time, she's effectively an IBM postern, still trying to direct sales leads towards her old employer.
by graviton August 25, 2010
Get the mug
Get a postern mug for your Aunt Sarah.