An outdoor toilet or privy, especially in Australian and British dialect; a bathroom.
Australian slang of uncertain origin, possibly derived from 'dun' or related to the earlier term 'dunnikin' (a portable toilet). First documented in Australian English in the early 1900s, where outhouses were extremely common due to sparse settlement.
The word 'dunny' is Australia's linguistic gift to English humor—it manages to sound both crude and quaintly nostalgic, and Australians have built an entire comedic tradition around it, from 'Dunny of the Year' competitions to the famous expression 'happy as a dunny rat.'
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