From Longman Dictionary of Contemporary Englishdreamlanddream‧land /ˈdriːmlænd/ noun [uncountable] 1 IMAGINEa happy place or situation that exists only in your imagination2 informal sleep The kids are both far away in dreamland.
Examples from the Corpus
dreamland• But honesty is a rare commodity, especially in dreamland.• Once more, she tries to lull herself into dreamland via a salacious scenario starring herself and Riva.• I sat down again and lapsed into dreamland.• Most of the kids were on their way to dreamland. 