A dulcimer is a stringed instrument used mainly in American folk music. It has three strings, and a fretted fingerboard like a guitar.
Like a banjo, the dulcimer is a stringed instrument which is played like a guitar, with a pick or your fingers. Like a guitar, the strings are strummed with one hand while the strings are held down with the other hand on a fretted fingerboard. The dulcimer has an elliptical shape that's very distinctive. There is also a type of dulcimer played by striking it with little hammers. Both kinds of dulcimers make a light, sweet sound.