Top definition
The Australian slang term for underwear. A play on the Australian term 'down under' and the word 'underwear'. Typically for girls underwear but can be used for boys too. True down underwear usually has the pattern of the Australian flag on it.
"Dude, that sheila at the pub last night totally flashed me her down underwear."
by Alchemy Senpai June 14, 2014
Get the mug
Get a Down Underwear mug for your dog Helena.