• Bengali Word কষণ ১ English definition (noun) 1 act of testing gold or silver by a touchstone. 2 the converting of hides into leather by the use of tan; tanning. কষিত (adjective) 1 tested on a touchstone. 2 tanned. কষিত কাঞ্চন (noun) tested gold; pure gold; (figurative) person of a tried ability or integrity.