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1 definition by arm71

Affectionate term for ANZAC soldiers. The term originated during the Gallipoli Penisula campaign, where digging protective trenches was a comonplace activity. Younger soldiers from other conflicts may be referred to as Diggers, but the Old Digger is reserved for those that served in WW1 or WW2.
There weren't many Old Diggers marching in the ANZAC Parade this year.
by arm71 April 25, 2010