أَرْضٌ رَهْمَاءُ
Land upon which rains such as are termed
رِهَام
have fallen: (Ham p. 99:) and
رَوْضَةٌ مَرْهُومَةٌ, [from رُهِمَت, Meadows] watered by the rain termed
رِهْمَةٌ: (JK, S, K:) one should not say مُرْهَمَةٌ. (K.)