Ironbark
/ˈʌɪənbɑːk/
"Ironbark" in a Sentence (2 examples)
The tents and sheets are made of the best Canadian duck, tanned for the purpose of preservation with a strong extract of iron-bark and wattle-bark.
When he had trimmed a bit of ironbark to size, or knocked the worst splinters off a split fence post, he would swing it around his head a few times before crashing it down on the rails.