رعب

رَاعِبٌ ذ and ↓ رَعَّابٌ, [but the latter is an intensive epithet, or denotes habit, or frequency,] One who threatens; a threatener. (K, * TA.) ― -b2- One who charms, or fascinates, by magical enchantment [or by the eye ] or otherwise. (K, * TA.) ― -b3- One who composes, or utters, the rhyming prose termed رَعْبٌ. (K, TA.) ― -b4- Also the former (راعب), A torrent that fills the valley: (S:) or (tropical:) that frightens by its abundance and its width and its filling the valley. (A.) It is applied also to rain. (TA.) And A valley filled with water. (L.)