رجس

نَرْجِسٌ ذ (S, Msb, K) and نِرْجِسٌ (AA, Sgh, Msb, K) [The narcissus; ] a certain sweet-smelling flower, (Msb, * TA,) well known: (Msb, K:) the smell of which is beneficial for the cold rheum and the cold headache: (K:) the word is arabicized, (S, Msb, TA,) from [the Persian] نَرْGِسْ: (TA:) [this being the case, the ن should be regarded as radical it is said, however, that] the ن in نَرْجِسٌ is augmentative, because there is no word of the measure فَعْلِلٌ, but there is of the measure نَفْعِلٌ, (S,) though only what is changed, in application, from a verb: (Msb:) but نِرْجِسٌ is of the measure فِعْلِلُ; (TA;) or it is of the measure نِفْعِلٌ, the augmentative letter being made to accord in its vowel with the radical letter in اـِذْخِرٌ and that in اـِثْمِدٌ &c.: (Msb:) or, accord. to IDrd, نَرْجِسٌ is of the measure فَعْلِلٌ, and the only instance of that measure. (TA in art. نرجس.) If you name a man نَرْجِس, you make it imperfectly decl., because it is like نَضْرِبُ: (S:) but if you name him نِرْجِس, it is perfectly decl., because it is of the measure فِعْلِلٌ (TA) [or نِفْعِلٌ, neither of which is the measure of a verb]. ― -b2- نَرْجِسُ المَائِدَةِ: see زُمَاوَرْدٌ.