The word especially comes into picture because many cultures and/or people believe that dreams have meanings and hence they try to interpret them, and find their meaning. Hence the need for the word.
In fact in Indian subcontinent, this is a belief among some that the dreams dreamed during the morning hours turn out to be true. Though that's more of a saying than a belief.
Shafqat Amanat Ali's debut album was also called Tabeer. It came out in 2008.