IshGen 202:8 :ܠܩܣܛܪܣܝܘ ܐܘܟܝܬ ܠܡܣܪ̈ܣܐ ܘܠܫܪܝܪ̈ܐ ܡܗܝ̈ܡܢܐ ܩ݁ܪܐ ܥܒܪܝܐ‏ : the Hebrew calls the castrati, that is eunuch, and the honest ones trustworthies
See the entire entry for qsṭrsyw n.m.pl. castrati, eunuchs