cork tree

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several deciduous trees of the genus Phellodendron native to eastern Asia and cultivated as ornamentals, especially P. amurense, having deeply furrowed, thick, corky bark.

from The Century Dictionary.

• noun The Quercus Suber, the outer bark of which is the substance cork. Also called cork-oak.
• noun In Australia: Hakea lorea, a tree of the family Proteaceæ, giving strong, durable timber: so called in allusion to its rugged bark.
• noun Same as bat's-wing coral-tree.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun prickly Australian coral tree having soft spongy wood
• noun deciduous tree of China and Manchuria having a turpentine aroma and handsome compound leaves turning yellow in autumn and deeply fissured corky bark