مَيْثَاءُ

Even, or plain, or soft, land: plural مِيثٌ: (S, K:) you say, أَرْضٌ مَيْثَاءُ, and أَرَاضٍ مِيثُ: (A:) [see also مِيثَاءُ, in article موث:] an even, or a plain, or soft, tract of sand: and a hill of good soil: (L:) and a [water-course such as is called] تَلْعَة, that becomes as large as half, or twothirds, of the valley. (L, Sh, in TA, voce تلعة.)