ب ت رb-t-r
(ض) بَتَرَ يَبْتِرُ بَتْرًاbatara yabtiru batran: to cut a thing off and sever it, to dock the tail.
أَبْتَرabtar (pattern (wazn) أَفْعَلafʿal, adjective): tail-docked; and figuratively one whose line or remembrance is cut off, rootless. Only once in the Quran: ﴿إِنَّ شَانِئَكَ هُوَ الْأَبْتَرُ﴾ (Al-Kawthar 108:3)