mulga

Any of a number of small acacia trees, especially Acacia aneura, forming dense scrub in dry inland areas of Australia.

Ford (1969) points out that it is distributed from southern Northern Territory and northern South Australia west through mulga country of the Gibson and Great Victoria Deserts to the coast of Western Australia.

1983, Queensland Department of Agriculture and Stock, The Queensland Journal of Agriculture and Animal Science, Volumes 40-42, page 68, This paper describes a preliminary field experiment designed to examine the effect of supplementing sheep fed mulga with several proprietary licks and a more comprehensive field experiment to evaluate the effect of the most promising lick fed with cottonseed meal.

Any region where mulga is the predominant vegetation.

The outback.

I'd forgotten for a moment you are not all mulga-bred […]

Something made from the wood of a mulga tree.

Ellipsis of mulga wire (“a message or story transmitted through an informal gossip network, especially one containing false information”).