a small musical instrument consisting of a lyre-shaped metal frame held between the teeth and played by plucking a projecting bent piece with the finger: it produces twanging tones
Origin:
earlier Jew's trump, altered (by assoc. with Jew) < Du jeugdtromp, child's trumpet < jeugd, youth (confused in Eng with ME Judeu, Jew) + tromp, trumpet < OFr trompe: see trump