1) Castle builder 2) Castle-builder 3) Do-nothing 4) Idler 5) Layabout 6) Loafer 7) One indulging in reverie 8) PlayStation 4 game 9) Walter Mitty 10) Warner Music Group single 11) Windows game 12) Woolgatherer 1) Escapist 2) Lotus-eater 3) Muser 4) Stargazer 5) Walter mitty 6) Woolgatherer 
DAYDREAMER is a cognitive architecture developed at University of California, Los Angeles by Erik Mueller. It models the human stream of thought and its triggering and direction by emotions, as in human daydreaming. The architecture is implemented as 12,000 lines of Lisp code. ==History== DAYDREAMER was begun by Erik Mueller in 1983 while he was s...
• (n.) One given to daydreams.
Day'dream`er noun One given to daydreams. 
[n] - someone who indulges in idle or absent-minded daydreaming
woolgatherer noun someone who indulges in idle or absentminded daydreaming