Synonyms for Dream (same or very similar meaning)
WordNet sense 1 (a cherished desire):
ambition, aspirationWordNet sense 2 (imaginative thoughts indulged in while awake):
dreamingWordNet sense 3 (a fantastic but vain hope (from fantasies induced by the opium pipe)):
pipe dreamWordNet sense 4 (have a daydream; indulge in a fantasy):
daydream, stargaze, woolgatherFrom the ODE community, based on WordNetadd/edit