What is "khamak"

The Khamak is a string instrument close to ektara, originating in India, common in folk music of Bengal, Orissa and North East India, especially Baulgaan. It is a one-headed drum with a string attached to it which is plucked. The only difference from ektara is that no bamboo is used to stretch the string, which is held by one hand, while being plucked by another.