ˈ ̷ ̷( ̷ ̷)ˌ ̷ ̷ noun
1. or ironbark tree : any of several Australian eucalypts (as Eucalyptus sideroxylon, E. paniculata, E. siderophloia, E. resinifera ) having hard gray bark and useful timber and in some cases yielding eucalyptus gum
2. : the extremely heavy hard strong durable wood of an ironbark which is commonly available in large sizes and is extensively used in heavy construction