Woolgathering

['wʊl,ɡæðərɪŋ]

(noun.) an idle indulgence in fantasy.

Checked by Erwin--From WordNet

(a.) Indulging in a vagrant or idle exercise of the imagination; roaming upon a fruitless quest; idly fanciful.

(n.) Indulgence in idle imagination; a foolish or useless pursuit or design.

Typed by Helga