Word.ws English Dictionary

mountain ash

mountain ash noun: a European tree, rowan or, more specifically, European rowan, of species Sorbus aucuparia.

mountain ash: a European tree, rowan or, more specifically, European rowan, of species Sorbus aucuparia
Image: Eah, CC BY-SA 3.0, via Wikimedia Commons

Noun

mountain ash (usually uncountable, plural mountain ashes)

  1. (UK, usually) A European tree, rowan or, more specifically, European rowan, of species Sorbus aucuparia.
    • On the verdant slope and down by the edge of the water, the bird-cherry and the mountain ash displayed their flowery garb of summer.1886, Peter Christen Asbjø￵rnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 280
    • Various measures were taken to avoid it, most popular being the suspension of certain herbs and tree branches over the doorways of dwellings and stables. Commonly used greenery were tansy, honesty, garlic, St. John's Wort, mountain ash, roadside verbena.1940, Rosetta E. Clarkson, Green Enchantments: The Magic Spell of Gardens, The Macmillan Company, page 271
  2. (usually) Any of several trees in the genus Sorbus in North America.
    • All three mountain-ashes are shrubs of climax and subclimax northern coniferous forest communities, along with speckled alder, Labrador tea, mountain and red maples, yellow birch, and bunchberry.1974, William M. Healy, Shrubs and Vines for Northeastern Wildlife, numbers 6-10, page 99
    • To the front left of the house, just up from the sidewalk, was a mountain ash tree. Before I was born, Gramma Moody, planted the mountain ash tree there.2008, Elna Fone Nugent, Mountain Ash: A New England Memoir, page 30
  3. (usually) A tree native to southeastern Australia, Eucalyptus regnans, the tallest of all flowering plants.
    • McCarthy and Lindenmayer (1998) developed a model of the development of multi-aged Mountain Ash forest in response to fire. The model predicted the prevalence of multi-aged Mountain Ash forest as a function of the mean fire interval.2002, Brendan Mackey, David Lindenmayer, Malcolm Gill, Michael McCarthy, Janette Lindesay, editors, Wildlife, Fire and Future Climate: A Forest Ecosystem Analysis, page 42
    Synonyms:
    stringy gum, swamp gum, Tasmanian oak, Victorian ash
  4. (usually) A Texan ash tree of species Fraxinus texensis.
    Synonyms:
    Texas ash

Proper noun capitalized: Mountain Ash

Mountain Ash

  1. A town in Mountain Ash East community and Mountain Ash West community, Rhondda Cynon Taf borough county borough, Wales (OS grid ref ST0499). The communities have no councils.
  2. An unincorporated community and coal town in Whitley County, Kentucky, United States.

Examples of mountain ash in a sentence

  • 2007, Tyler Guthrie, Mountain Ash: Formally Rowan Tree, Trinity College, Academic Dissertation.
  • In the hills of Appalachia, in a cove that no living man will ever find, is a Mountain Ash unlike any other in the world.2011, Ruth Sims, The Legend of the Mountain Ash, unnumbered page:

Synonyms of mountain ash

All synonyms of mountain ash

Forms of mountain ash

pluralmountain ashes

Words formed from mountain ash

Questions about mountain ash

What does mountain ash mean?
Mountain ash means a European tree, rowan or, more specifically, European rowan, of species Sorbus aucuparia.
How do you use mountain ash in a sentence?
2007, Tyler Guthrie, Mountain Ash: Formally Rowan Tree, Trinity College, Academic Dissertation.
What part of speech is mountain ash?
Mountain ash can be a noun or a proper noun.
What is the plural of mountain ash?
The plural of mountain ash is mountain ashes.

Words near mountain ash in the dictionary

  1. mountain
  2. mountain antelope
  3. mountain antelopes
  4. mountain apple
  5. mountain apples
  6. mountain ash
  7. mountain ashes
  8. mountain avens
  9. mountain avocetbill
  10. mountain avocetbills
  11. Mountain Bay

Source and license

Adapted from Wiktionary: mountain ash (page history and authors); Mountain Ash (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “mountain ash.” Word.ws, https://word.ws/mountain_ash. Based on Wiktionary, CC BY-SA 4.0.