cittern

noun1

1. •
   A stringed instrument (chordophone), played with a plectrum (a pick), and most commonly possessing four wire strings and chromatic frets, which is a precursor to the modern day guitar.

   • Antwerp was world-famous for its harpsichords, but it was also a centre, in the 16th century, where citterns, lutes, viols and later violins were constructed with skill. — 2000