#1 daydream v. [dream, woolgather, stargaze] have a daydream; indulge in a fantasy. wn
#2 daydream n. [reverie, revery, daydreaming, oneirism, air castle, castle in the air, castle in Spain] absentminded dreaming while awake. wn
#3 daydream v. [moon] have dreamlike musings or fantasies while awake; "She looked out the window, daydreaming". wn
vizzz