daydream daydream /ˈdeɪˌdriːm/

noun

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

verb

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