"dreamer" in the noun sense
1. dreamer
someone who is dreaming
2. idealist, dreamer
someone guided more by ideals than by practical considerations
3. escapist, dreamer, wishful thinker
a person who escapes into a world of fantasy
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License