to will, to want: to settle on what you want done, usually said of someone whose wanting is enough to make it happen.
This is an Aramaic verb, and every one of its appearances falls inside the Aramaic chapters of Daniel. It is an ordinary word for wanting, but Daniel puts it to a very specific use. In almost every case the one doing the wanting also has the power to act on it, so the wanting and the deciding are a single motion. There is no gap here between wishing and doing.
Four times the book repeats one sentence about God: he gives the kingdom to whomever he wills (Daniel 4:17; 4:25; 4:32; 5:21). Nothing is added about conditions, merit, or advisers. That is the point of the refrain. The handing out of empires runs on this one verb and nothing else, and Nebuchadnezzar has to lose his mind and his throne before he learns it.
Then Daniel 5:19 turns the same verb four times in a single sentence, and this time the subject is Nebuchadnezzar himself: whomever he wanted he killed, whomever he wanted he spared, whomever he wanted he raised up, whomever he wanted he brought low. The echo is deliberate. A human king had come to act with exactly the freedom the book has just said belongs to God alone, which is why the very next verse says his heart grew proud and he was brought down.
Once the word steps out of the throne room entirely. In Daniel 7:19 the prophet says he wanted to know the truth about the fourth beast. Here it is a plain, powerless wish: a man who has seen something terrible and would like it explained. The same verb, with no throne behind it, is simply wanting.