نصح

نِصَاحٌ ذ (tropical:) Thread (S, K) with which one sews: (S:) pl, نُصُحٌ (K, TA; in the CK نُصْحٌ;) and نِصَاحَةٌ: (K:) the kesreh and ا in the latter are not those which are in the sing., and the ة is added as a fem. sign of the pl. (TA.) [See also خَيْطٌ.]