Cetera or cetara is a plucked string instrument played in Corsica. It has sixteen, or sometimes eighteen, metal strings, running in paired courses, with a body similar to the mandolin, but larger, and is plucked with a plectrum made of horn or tortoiseshell.
The Italian term also occurs in historical sources and usually interpreted to indicate a musical instrument of the cittern family.
References
Cetara Wikipedia(Text) CC BY-SA