The visions of mine head; because the fancy and imagination is in the head; and he calls them visions or seeings, because eyes and sight are attributed to the understanding, and the thing seemed visible to him, as if he beheld it with his eyes. A tree: those that write of the language of the East tell us that a tree denote some excellent man. Thus the prophet Ezekiel, Eze 31 throughout, describes the king of Assyria, and Pharaoh king of Egypt, in their flourish, height, and great fall, comparing them to huge cedars.
Related Commentaries of Daniel 4:10
Daniel 4:10
10 Thus were the visions of mine head in my bed; I saw,b and behold a tree in the midst of the earth, and the height thereof was great.