What is "dulcimers"

Usage examples of "dulcimers".

There were many other rooms, all filled with lords and ladies, all with entertainers: three different gleemen in their cloaks, more jugglers and tumblers, and musicians playing flutes, bitterns, dulcimers, and lutes, plus five different sizes of fiddle, six kinds of horn, straight or curved or curled, and ten sizes of drum from tambour to kettle.

We are not angels, which have their dulcimers ever on the choral pitch.