Beyond-the-black-stump Definition

phrase

(Australia, informal, idiomatic) In an extremely isolated place, remote from populated areas; in the middle of nowhere. Typically used to refer to outback areas.

Wiktionary

Origin of Beyond-the-black-stump

Origin and development contested; see . Attested 20th century, possibly developed in 19th century. Either from the general use of fire-blackened tree-stumps in directions, or from a particular such black stump.

From Wiktionary