فَايءِجَةٌ

A wide tract between two elevated portions, (S, O, K, all in article فوج,) of rugged ground, or of sand: (S, O:) or what has the form of a valley between two mountains, or between two rugged tracts containing stones and sand and earth, like a خَلِيف [q. v.], but wider: thus explained by ISh: plural فَوَايءِجُ. (TA in article فوج.)