DAYDREAMING
reverie, revery, daydream, daydreaming, oneirism, air castle, castle in the air, castle in Spain
(noun) absentminded dreaming while awake
Source: WordNet® 3.1
Verb
daydreaming
present participle of daydream
Noun
daydreaming (plural daydreamings)
An instance of daydreaming; a daydream or reverie.
Source: Wiktionary
DAYDREAM
Day"dream`, n.
Definition: A vain fancy speculation; a reverie; a castle in the air;
unfounded hope.
Mrs. Lambert's little daydream was over. Thackeray.
Source: Webster’s Unabridged Dictionary 1913 Edition