It is actually the name of a Georgian folk song (that's the country Georgia, not the state). This music is used a number of times in the movie "Nosferatu", the 1979 remake of Murnau's 1922 classic directed by Werner Herzog with Klaus Kinski as Dracula and Isabelle Adjani as Lucy. It's performed by Vocal Ansambl Gordela, a Georgian folk ensemble. [By the way, this adaptation of Stoker's DRACULA has much to recommend it - not the least of which is its soundtrack, which also includes the "Sanctus" from Gounod's "St Cecilia's Mass."]
I searched for years to find this haunting piece of music (one of my all-time favorites) and I finally found it - thanks to YouTube.
Give a listen to "Zinskaro":