(Heb. o’ren, “tremulous”), mentioned only Isa. 44:14 (R.V., “fir tree”). It is rendered “pine tree” both in the LXX. and Vulgate versions. There is a tree called by the Arabs aran, found still in the valleys of Arabia Petraea, whose leaf resembles that of the mountain ash. This may be the tree meant. Our ash tree is not known in Syria.
Ash
1 verse
Isaiah
Isaiah 44:14
He heweth him down cedars, and taketh the cypress and the oak, which he strengtheneth for himself among the trees of the forest: he planteth an ash, and the rain doth nourish it.
From Easton's Bible Dictionary
Matthew George Easton, 1897