ironbark

[ ahy-ern-bahrk ]
/ ˈaɪ ərnˌbɑrk /

noun

any of the various Australian eucalyptuses having a hard, solid bark.

Origin of ironbark

First recorded in 1905–10; iron + bark2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for ironbark

ironbark
/ (ˈaɪənˌbɑːk) /

noun

any of several Australian eucalyptus trees that have hard rough bark
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