ن خ رn-kh-r
(ف، ض) نَخَرَ يَنْخَرُ نَخِيْرًاnakhara yankharu nakhīran: to make a sound through the nostrils; (س) نَخِرَ الْعَظْمُ يَنْخَرُ نَخَرًاnakhira al-ʿaẓm yankharu nakharan: (of a bone) to become decayed and hollow so that air passes through it. (This verb is not used in the Quran.)
نَخِرَةٌnakhirah (adjective on the pattern of فَعِلَةٌfaʿilah): rotten, hollow. Only once in the Quran, in the account of the denial of the resurrection: ﴿ءَاِذَا كُنَّا عِظَامًا نَّخِرَةً﴾ (An-Nāziʿāt 79:11)