نصلنَصْلٌ The iron head or blade (Mgh, K) of an arrow, (S, Mgh, K,) and of a spear, (S, K,) and of a sword, (S, Mgh, Msb, K,) and of a knife, (S, Msb,) and the like. (Msb.) b2:  نَصْلٌ The spun thread of the spindle: (K:) see سُرْسُورٌ.لِحْيَةٌ نَاصِلٌ A very white beard. (See العَنْقَاءُ المُغْرِبُ, art. غرب.) b2:  مَا بَلِلْتُ مِنْ فُلاَنٍ بِأَفْوَقَ نَاصِلٍ: see بَلَّ and أَفْوَقَ in two places.