ع ر شʿ-r-sh
(ض، ن) عَرَشَ يَعْرِشُ وَيَعْرُشُ عَرْشًاʿarasha yaʿrishu wa-yaʿrushu ʿarshan: to put a thatched covering over something or over a roof; to build trellises for vines. ﴿وَمَا كَانُوْا يَعْرِشُوْنَ﴾ (Al-Aʿrāf 7:137)
مَعْرُوْشٌmaʿrūsh (passive participle, ism mafʿūl): trained up on trellises. ﴿جَنّٰتٍ مَّعْرُوْشٰتٍ وَّغَيْرَ مَعْرُوْشٰتٍ﴾ (Al-Anʿām 6:141)
عَرْشٌʿarsh pl. عُرُوْشٌʿurūsh (also a noun, ism dhāt): roof; throne. ﴿ثُمَّ اسْتَوٰى عَلَي الْعَرْشِ﴾ (Al-Aʿrāf 7:54); ﴿وَهِيَ خَاوِيَةٌ عَلٰى عُرُوْشِهَا﴾ (Al-Baqarah 2:259)