any of the several large monitor lizards of the family Varanidae, of Australia, especially Varanus varius and V. giganteus, both sometimes growing to 6 feet (1.8 meters).

Origin of goanna

First recorded in 1795–1805; aphetic form of iguana
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Historical Examples of goanna

British Dictionary definitions for goanna



any of various Australian monitor lizards
Australian slang a piano

Word Origin for goanna

C19: sense 1 changed from iguana; sense 2 from rhyming slang pianna
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