مَاضِرٌ
Root: مضر
Full Definition
مَاضِرٌ
and
مَضِيرٌ and
مَضِرٌ , the last thought by ISd to be a kind of relative or possessive epithet, because the verb is مَضَرَ, [but it seems that he was unacquainted with, or that he disallowed, the form مَضِرَ, of which it is the regular part. n.,] Milk that is sour, or acid, biting the tongue: or such as bites the tongue, before becoming
رَائِب: or that has become sour, or acid, and white.