April 25, a national day of remembrance in Australia and New Zealand commemorating the Anzac landing on Gallipoli, Turkey, in 1915, the first major engagement of Australian and New Zealand forces in World War I.
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British Dictionary definitions for anzac day
25 April, a public holiday in Australia and New Zealand commemorating the Anzac landing at Gallipoli in 1915
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012