ک س فk-s-f
(ض) كَسَفَ يَكْسِفُ كَسْفًاkasafa yaksifu kasfan: (1) to cut (cloth) (2) (of the sun or moon) to be eclipsed, to lose its light. (This verb is not used in the Quran.)
كِسْفٌkisf pl. كِسَفٌkisaf (noun, ism dhāt): a piece cut off from a thing. ﴿اَوْ تُسْقِطَ السَّمَآءَ كَمَا زَعَمْتَ عَلَيْنَا كِسَفًا﴾ (Al-Isrāʾ 17:92); ﴿وَاِنْ يَّرَوْا كِسْفًا مِّنَ السَّمَآءِ سَاقِطًا﴾ (Aṭ-Ṭūr 52:44)