To move out of one's family home to live independently (as in a "flat" or apartment). Primarily heard in Australia, New Zealand. I'm an adult now, so it's time for me to go flatting.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
go flattingleave the family home to live in a flat. Australian & New Zealand
Farlex Partner Idioms Dictionary © Farlex 2017