'Visions' in the Bible

Now as for these four youths, God gave them knowledge and skill in all learning and wisdom: and Daniel had understanding in all visions and dreams.

but there is a God in heaven that revealeth secrets, and he hath made known to the king Nebuchadnezzar what shall be in the latter days. Thy dream, and the visions of thy head upon thy bed, are these:

I saw a dream which made me afraid; and the thoughts upon my bed and the visions of my head troubled me.

O Belteshazzar, master of the magicians, because I know that the spirit of the holy gods is in thee, and no secret troubleth thee, tell me the visions of my dream that I have seen, and the interpretation thereof.

Thus were the visions of my head upon my bed: I saw, and, behold, a tree in the midst of the earth; and the height thereof was great.

I saw in the visions of my head upon my bed, and, behold, a watcher and a holy one came down from heaven.

In the first year of Belshazzar king of Babylon Daniel had a dream and visions of his head upon his bed: then he wrote the dream and told the sum of the matters.

As for me, Daniel, my spirit was grieved in the midst of my body, and the visions of my head troubled me.