noun (used with a plural verb) Australian.
Examples from the Web for backblocks
In this article the paper spoke of backblocks bushmen under the generic soubriquet of Billjim.Fifty-Two Stories For Girls|Various
You'll be jolly glad to get rid of me and be off with the uncle into the backblocks.
They come down from the backblocks with perhaps a hundred pounds to spend on a week of blissful unconsciousness.