TgO Gen40:3 :וִיהַב יָתְהוֹן בְמַטְרַת בֵית רַב קָטוֹלַיָא דִבבֵית אֲסִירֵי‏ : he put them in the custody [or: watch chamber?] of the chief executioner's place in the prison
See the entire entry for maṭṭrā, maṭṭartā n.f. custody, care

TgO Gen40:3 :וִיהַב יָתְהוֹן בְמַטְרַת בֵית רַב קָטוֹלַיָא‏ :
See the entire entry for rb@qṭwlyn n.m. chief executioner