(Aramaic) or dak (Aramaic) {dawk}; prolonged from da'; this -- the same, this.
see HEBREW da'
H1791. dek
דֵּךְ demonstrative pronoun masculine this, feminine דָּח; only Ezra; Daniel uses דִּכֵּן (Egyptian and Cappadocian Aramaic זך (CISii. 151 RŠS:361 B S-CPap. (feminine דכי דכא, ib.F 6, 9), LzbEph. i. 67); דֵּיכֵי ᵑ7, feminine דָּח; Arabic ; Ethiopic From דָּא זֶה, (feminine), with the affix ך (WCG 110), thus literally = German dieser da. The plural is אִלֵּח, q. v.); — this (always after its substantive), Ezra 5:16 דֵח שֵׁשְׁבַּצַּר, 5:17 דֵח בֵּיתאֱֿלָהָא, 6:7-8, 12; feminine 4:13, 15, 16 (twice in verse); 4:19, 21 all דָח קִרְיְתָא, 5:8.