|Easton's Bible Dictionary|
Hebrews `arar, (Jeremiah 17:6; 48:6), a species of juniper called by the Arabs by the same name (`arar), the Juniperus sabina or savin. "Its gloomy, stunted appearance, with its scale-like leaves pressed close to its gnarled stem, and cropped close by the wild goats, as it clings to the rocks about Petra, gives great force to the contrast suggested by the prophet, between him that trusteth in man, naked and destitute, and the man that trusteth in the Lord, flourishing as a tree planted by the waters" (Tristram, Natural History of the Bible).
Noah Webster's Dictionary
1. (n.) A low shrub (Erica, / Calluna, vulgaris), with minute evergreen leaves, and handsome clusters of pink flowers. It is used in Great Britain for brooms, thatch, beds for the poor, and for heating ovens. It is also called heather, and ling.
2. (n.) Also, any species of the genus Erica, of which several are European, and many more are South African, some of great beauty.
3. (n.) A place overgrown with heath; any cheerless tract of country overgrown with shrubs or coarse herbage.
Int. Standard Bible Encyclopedia
Heath (2 Occurrences)
Jeremiah 17:6 For he shall be like the heath in the desert, and shall not see when good comes, but shall inhabit the parched places in the wilderness, a salt land and not inhabited. (WEB KJV ASV DBY WBS)
Jeremiah 48:6 Flee, save your lives, and be like the heath in the wilderness. (WEB KJV ASV WBS)