Ash

Boyd’s Bible Dictionary:

Ash was not indigenous to Palestine; perhaps pine or cedar is meant (Isa. 44:14).

Concise Bible Dictionary:

The particular tree pointed out by the Hebrew word Oren is not known (Isa. 44:14). The LXX and the Vulgate call it “pine.”

Strong’s Dictionary of Hebrew Words:

Number:
766 (find all occurrences in KJV Bible)
Transliteration:
’oren
Phonic:
o’-ren
Meaning:
from the same as 765 (in the sense of strength); the ash tree (from its toughness)
KJV Usage:
ash