A song in this language, described as silent, shrill and spilling sickening, overwhelming horror into one's veins, was sung by Vereena to take control of Nivellen's mind.
After Geralt's company left the Lyrian Army and stole from its supplies in order to survive a long journey south, Regis received a mule which he named Draakul. When asked by his human friends what it means he explained it had an amusing significance in the culture and speech of vampires but was "an untranslatable pun".
Most of the vampire words in Blood and Wine expansion seems to derive from Etruscan.
coffin (from Etruscan)
as, how, so, because, then, when, why (From Etruscan)