What is the meaning of Zither?

A musical instrument consisting of a flat sounding box with numerous strings placed on a horizontal surface, played with a plectrum or fingertips.

Related or similar instruments in other cultures, such as the Chinese guqin or Norwegian harpeleik; especially any chordophone without a neck, and with strings that pass over the body.

To play a zither.

To make a sound similar to that made by a zither; to move while making such a sound.

Source: wiktionary.org