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.
1911, Cittern, article in Encyclopædia Britannica Eleventh Edition,
The cittern consisted of a pear-shaped body similar to that of the lute but with a flat back and sound-board joined by ribs. The neck was provided with a fretted fingerboard; the head was curved and surmounted by a grotesque head of a woman or of an animal.