The Aramaic particle/noun kol means all, every, the whole of — corresponding to the Hebrew kol which is one of the most frequently used words in the entire Hebrew Bible. It functions as a quantifier expressing totality, universality, or completeness.
The word kol — "all" — frames some of the most sweeping biblical declarations: "All have sinned" (Romans 3:23), "All things work together for good" (Romans 8:28), "All authority has been given to me" (Matthew 28:18). In the Aramaic sections of Daniel and Ezra, it underscores the universal scope of divine sovereignty. When Nebuchadnezzar declares that God "rules over all the kingdom of men," the word kol drives home the comprehensive nature of divine sovereignty — no exception, no exemption.