daydream in WordNet English dictionary

1. absentminded dreaming while awake
   reverie  revery  daydream  daydreaming  oneirism  air castle  castle in the air  castle in Spain 
   

1. have a daydream; indulge in a fantasy
   dream  daydream  woolgather  stargaze 
   
2. have dreamlike musings or fantasies while awake
   "She looked out the window, daydreaming"
   daydream  moon