مِرْضَاخٌ

A stone with which, (K, and Ham p. 615,) or upon which, (Ham,) date-stones are broken [or bruised or crushed; to serve as food for camels]; (K, Ham;) as also ↓ مِرْضَخَةٌ: plural مَرَاضَخُ: (TA:) but مِرْضَاخٌ is [said to be] a dialect var. of weak authority, of مِرْضَاحٌ. (TA in article رضح.)