سَيْلٌ

A torrent, or flow of water; (MA;) [i. e.] much water, (M, K,) or a collection of rainwater, (Msb,) flowing, or running, (M, Msb, K,) in a valley, or water-course, or torrent-bed: (Msb:) or water that comes to one [from rain, in any case, or] from rain that has not fallen upon one: (TA:) originally a verbal noun: (Msb, TA:) plural سُيُولٌ: (S, M, Msb, K:) ↓ سَايءِلَةٌ, also, signifies the same as سَيْلٌ; and its plural is سَوَايءِلُ [explained in the M as meaning flowing, or running, waters]. (TA.)

And they said also, مَاءٌ سَيْلٌ, meaning ↓ سَايءِلٌ [i. e. Flowing, or running, water]; (M, K;) putting the verbal noun in the place of the epithet. (M.) وَجَدْتُ بَقْلًا وَبُقَيْلًا وَمَاءً عَلَلًا سَيْلًا, meaning I found herbs full-grown and large and tall, and herbs not full-grown and therefore small, [and water among trees, flowing, or running,] is a saying of one sent to seek for herbage and water; mentioned by Th. (M.)