Most Helpful Girl
I'm Arabic, but I don't know why many people in this question translated it to "Hayal" in Arabic!
I guess they used Google translator which gives another word with a close pronunciation, which is wrong.
Dream = "Hulm" in Arabic if it's a noun, and "Halama" if it's a verb, and the "H" here isn't pronounced like the "H" in English, but this is the closest pronunciation. Hope this helped you. I don't advise to depend on Google translator entirely.