利根(lì gēn) “sharp faculties; those of acute faculties”
HD. 2.640a(法华经); DK. 2.244d(法华经);
ps-L. 35b16.娑(←裟)竭罗龙王女年始八歳，智慧利根，善知众生诸根、行业，…………(p);
K. 263.3.tīkṣṇêndriya~; not found at Z. 106a2; not found at STF. 197c21;