دَافِعَةٌ

[feminine of دَافِعٌ, q. v.: and, used as a subst.,] The lower, or lowest, part of any [water-course such as is called] مَيْثَاء: plural دَوَافِعُ: this latter signifying the lower, or lowest, parts of the مِيث, [plural of ميثاء,] (ISh, K,) where they pour into the valleys, (ISh,) or where the valleys pour thereinto: (K:) or the plural signifies the parts in which the water pours to the ميث; while the ميث pour into the main valley: (As:) or the دافعة is a [water-course such as is called] تَلْعَة which pours into another تلعة, when it runs down a descending ground, or declivity, from elevated, or rugged and elevated, ground, and you see it going to and fro in places, having spread somewhat, and become round; then it pours into another, lower than it: every one such is thus called; and the plural is as above. (Lth.)