(1.) Hebrew atad, Judges 9:14; rendered "thorn," Psalm 58:9. The LXX. and Vulgate render by rhamnus, a thorny shrub common in Palestine, resembling the hawthorn.

(2.) Hebrew hoah, Isaiah 34:13 (R.V. "thistles"); "thickets" in 1 Samuel 13:6; "thistles" in 2 Kings 14:9, 2 Chronicles 25:18, Job 31:40; "thorns" in 2 Chronicles 33:11, Cant. 2:2, Hosea 9:6. The word may be regarded as denoting the common thistle, of which there are many species which encumber the corn-fields of Palestine. (see THORNS.)

Noah Webster's New International Dictionary of the English Language

1. (n.) Any plant of the genus Rubus, including the raspberry and blackberry. Hence: Any rough, prickly shrub.

2. (n.) The brambling or bramble finch.