• noun:   exceptionally tough or hard wood of any of a number of ironwood trees
• noun:   medium-sized hop hornbeam of eastern North America
• noun:   handsome East Indian evergreen tree often planted as an ornamental for its fragrant white flowers that yield a perfume; source of very heavy hardwood used for railroad ties
• noun:   a small slow-growing deciduous tree of northern Iran having a low domed shape

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