Link to this page noun: some of numerous deciduous trees regarding the genus Sorbus, including the rowan, having groups of small white flowers and bright orange-red berries organized in clusters. any one of several trees within the genus Sorbus in united states. The European types Sorbus aucuparia, additionally commonly known as rowan or even more especially European rowan. A tree native to southeastern Australian Continent, Eucalyptus regnans, the tallest of most flowering flowers. A Texan ash tree species, Fraxinus texensis. See Roman tree, and under hill. one of many small woods associated with the genus Pyrus, having ash-like leaves, primarily P. aucuparia One of several types of Eucalyptus, specially E. amygdalina, E. goniocalyx, E. Sie-beriana, and E. pilularis (the flintwood). See Tx ash. low-growing ash of Tx some of various woods associated with the genus Sorbus tree having wood much like the alpine ash; tallest tree in Australian Continent and tallest hardwood in the world View More adjective: an ornamental tree, the Pyrus Americana (or Sorbus Americana), producing gorgeous bunches of purple fruits. Its leaves tend to be pinnate, and its own flowers white, growing in fragrant groups. The European types could be the Pyrus aucuparia, or rowan-tree. Related Sources Definition for "mountain ash" some of numerous deciduous trees regarding the genus… View More Synonym for "mountain ash" Hypernym for "mountain ash" Form for "mountain ash" Same Context for "mountain ash"