a box with an opening in it across which gut strings of varying thickness are stretched, tuned in unison: when air blows over them, the strings produce varying harmonies
See aeolian harp in American Heritage Dictionary 4
noun
An instrument consisting of an open box over which are stretched strings that sound when the wind passes over them. Also called wind harp.
Origin:
Origin: From Aeolian, relating to Aeolus, god of the winds