Sentence:  So this was my future home, I thought!...Backed by towering hills, the but faintly discernible purple line of the French boundary off to the southwest, a sky of palest Gobelin flecked with fat, fleecy little <WSD>clouds</WSD>, it in truth looked a dear little city; the city of one's dreams. 
Meaning of the word marked with <WSD> tags:  A visible mass of water droplets suspended in the air.