glass harmonica

noun

1. a musical instrument composed of a set of graduated, revolving glass bowls, the rims of which are moistened and set in vibration by friction from the fingertips.

noun

1. a musical instrument of the 18th century consisting of a set of glass bowls of graduated pitches, played by rubbing the fingers over the moistened rims or by a keyboard mechanismSometimes shortened to: harmonica Also called: musical glasses