مضر

1 مَضَرَ ذ , aor. مَضُرَ ; (S, A, Msb, K;) and مَضِرَ, aor. مَضَرَ ; (A, K;) and مَضُرَ, aor. مَضُرَ ; (K;) inf. n. مُضُورٌ, (S, Msb, K,) of the first, (S, Msb,) and مَضْرٌ, [also of the first,] and مَضَرٌ, [of the second;] (K;) It (milk, S, A, Msb, K, and [so in the A, but in the K or,] beverage of the kind called نَبِيذ, A, K) was, or became, sour, or acid: (Msb:) or sour, or acid, biting the tongue: (A:) or such as to bite the tongue; (S, TA;) before becoming رَائِب: (TA:) or sour, or acid, and white. (K.)