cockrag
/ˈkɒkraɡ/noun Australian vulgar slang
An Aboriginal loincloth.We used to play hiding and run away from school in the bush—we'd drop down dress, put on cockrag, and go....
- They wanted us to wear clothes, but we chucked them out and wore cockrag.
- Grabbed off my trousers, and pulled my shirt off, and put my cockrag back on and go back to the old time.
Origin
1960s: from cock1 in the sense 'penis' + rag1.