It's mentioned repeatedly by NPCs in quest text, though I can't give you screenshots cause... already did them all. >_>; It's also the term used in the Shroud wiki page for when the Shroud takes the life of an individual who falls out of favor with the elementals for whatever reason.
"Song dogs barking at the break of dawn, lightning pushes the edges of a thunderstorm; and these streets, quiet as a sleeping army, send their battered dreams to heaven."
Hipparion Tribe (Sagolii)Â - Â Antimony Jhanhi's Wiki