Noun
A genus of deciduous forest trees, found in the north temperate zone, and including the true ash trees.
Source: Webster's dictionaryThe inaccessibility of the canyon provided a safe haven for a rare ash tree Fraxinus sogdiana that survived the Ice Age and is now also grown in some other areas. Source: Internet
Microscopic section through one-year-old ash tree (Fraxinus) wood, drawing made by Van Leeuwenhoek. Source: Internet